MCQs on Fundamental of Electrical & Electronics Engineering / 2nd Sem

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Unit- 1 : Electric and Magnetic Circuits

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2nd Semester

FEEE Unit-1.1 : Concept of Passive Components: Resistors, Capacitors, Inductors

Fundamentals of Electrical & Electronics Engineering

Diploma in Engineering & Technology

2nd Semester - Common to all branch

1 / 20

Category: Basic Electricity

1. Frequency of Direct Current is

2 / 20

Category: Basic Electricity

2. If the length of a wire is doubled and diameter is halved, then the resistance will become _________ of the previous.

3 / 20

Category: Basic Electricity

3. What is the relation between resistance R and resistivity ρ of a wire ?

4 / 20

Category: Basic Electricity

4. Materials which easily allow the passage of electric current are known as ______

5 / 20

Category: Basic Electricity

5. An Inductor works as a ___________ circuit for DC supply.

6 / 20

Category: Basic Electricity

6. A choke coil is a coil having-

7 / 20

Category: Basic Electricity

7. The expression for energy of an inductor

8 / 20

Category: Basic Electricity

8. Three lamps are connected in parallel across the voltage source. What happen if one lamp will burn out?

9 / 20

Category: Basic Electricity

9. The reciprocal of resistivity is________

10 / 20

Category: Basic Electricity

10. Calculate the value of energy stored in an inductor if the value of inductance is 10H and 2A of current flows through it.-

11 / 20

Category: Basic Electricity

11. Calculate the ratio of the resistivity of 2 wires having the same length and same resistance with area of cross section 2m2 and 5m2 respectively.

12 / 20

Category: Basic Electricity

12. The units for inductance is _________ and capacitance is ___________

13 / 20

Category: Basic Electricity

13. Resistance of any circuit depends on –

14 / 20

Category: Basic Electricity

14. Color code for 1 ohm +-10% resistor is

15 / 20

Category: Basic Electricity

15. Which of the following statements are true with regard to resistance?

16 / 20

Category: Basic Electricity

16. A wire has the same resistance as the one given in the figure. Calculate its resistivity if the length of the wire is 10m and its area of cross section is 2m.

17 / 20

Category: Basic Electricity

17. Which of the following statements are true with regard to resistivity?

18 / 20

Category: Basic Electricity

18. A wire having an area of cross section = 10sqm and another wire having an area of cross section= 15sqm, have the same length and are made up of the same material. Which wire has more resistance?

19 / 20

Category: Basic Electricity

19. If a capacitor is connected with DC supply, it will act as –

20 / 20

Category: Basic Electricity

20. A wire of length 2m and another wire of length 5m are made up of the same material and have the same area of cross section, which wire has higher resistance?

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2nd Semester

FEEE Unit-1.2 : Different types of signal waveforms: DC/AC, voltage/current, periodic/non-periodic

Fundamentals of Electrical & Electronics Engineering

Diploma in Engineering & Technology

2nd Semester - Common to all branch

1 / 20

Category: Basic Electricity

1. If the rms voltage drop across a 15 kΩ resistor is 16 V, the peak current through the resistor is

2 / 20

Category: Basic Electricity

2. A saw-tooth wave has a period of 10 ms. Its frequency is

3 / 20

Category: Basic Electricity

3. When a sine wave has a frequency of 100 Hz in 12 s it goes through

4 / 20

Category: Basic Electricity

4. Amplitude is the maximum value of a voltage or current

5 / 20

Category: Basic Electricity

5. The average half-cycle value of a sine wave with a 40 V peak is

6 / 20

Category: Basic Electricity

6. A pulse waveform has a high time of 8 ms and a pulse width of 32 ms. The duty cycle is

7 / 20

Category: Basic Electricity

7. How many degrees are there in π/3 rad?

8 / 20

Category: Basic Electricity

8. A sinusoidal current has an rms value of 14 mA. The peak-to-peak value is

9 / 20

Category: Basic Electricity

9. Average value of a sine wave is 0.707 times the peak value

10 / 20

Category: Basic Electricity

10. One sine wave has a positive-going zero crossing at 15° and another sine wave has a positive-going zero crossing at 55°. The phase angle between the two waveforms is

11 / 20

Category: Basic Electricity

11. A 1 kHz signal has a period of 1 ms

12 / 20

Category: Basic Electricity

12. The instantaneous value is the voltage or current value of a waveform at its peak

13 / 20

Category: Basic Electricity

13. A signal with a 400 μs period has a frequency of

14 / 20

Category: Basic Electricity

14. Periodic is characterized by a repetition at fixed time intervals

15 / 20

Category: Basic Electricity

15. A 20 kHz pulse waveform consists of pulses that are 15 μs wide. The duty cycle is 

16 / 20

Category: Basic Electricity

16. If the rms current through a 4.7 kΩ resistor is 4 mA, the peak voltage drop across the resistor is

17 / 20

Category: Basic Electricity

17. If the peak of a sine wave is 13 V, the peak-to-peak value is

18 / 20

Category: Basic Electricity

18. The unit of frequency is the hertz

19 / 20

Category: Basic Electricity

19. If a sine wave goes through 10 cycles in 20 μs, the period is

20 / 20

Category: AC Fundamental

20. The length of a phasor represents the amplitude

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2nd Semester

FEEE Unit-1.3 : Voltage/current sources: Ideal/non-ideal ,independent/dependent , source transformation

Fundamentals of Electrical & Electronics Engineering

Diploma in Engineering & Technology

2nd Semester - Common to all branch

1 / 16

Category: Basic Electricity

1. In a parallel circuit, with a number of resistors, the voltage across each resistor is ________

2 / 16

Category: Basic Electricity

2. Ideal voltage source has-

3 / 16

Category: Basic Electricity

3. In a ____________ circuit, the total resistance is smaller than the smallest resistance in the circuit

4 / 16

Category: Basic Electricity

4. The current in each branch of a parallel circuit is proportional to _________

5 / 16

Category: Basic Electricity

5. The energy per unit charge is

6 / 16

Category: Basic Electricity

6. If there are two bulbs connected in series and one blows out, what happens to the other bulb?

7 / 16

Category: Basic Electricity

7. Batteries are generally connected in______

8 / 16

Category: Basic Electricity

8. If two bulbs are connected in parallel and one bulb blows out, what happens to the other bulb?

9 / 16

Category: Basic Electricity

9. In a series circuit, which of the parameters remain constant across all circuit elements such as resistor, capacitor and inductor etc?

10 / 16

Category: Basic Electricity

10. What happens to the current in the series circuit if the resistance is doubled?

11 / 16

Category: Basic Electricity

11. Which is the most cost efficient connection?

12 / 16

Category: Basic Electricity

12. Ideal voltage source has-

13 / 16

Category: Basic Electricity

13. In a _________ circuit, the total resistance is greater than the largest resistance in the circuit.

14 / 16

Category: Basic Electricity

14. Many resistors connected in series will?

15 / 16

Category: Basic Electricity

15. What is the voltage measured across a series short?
a) b)  c)  d) 

16 / 16

Category: Basic Electricity

16. Active circuit have -

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2nd Semester

FEEE Unit-1.4 : Simple problems on source transformation

Fundamentals of Electrical & Electronics Engineering

Diploma in Engineering & Technology

2nd Semester - Common to all branch

1 / 16

Category: Basic Electricity

1. Calculate the current across the 20 ohm resistor

2 / 16

Category: Basic Electricity

2. The currents in the three branches of a parallel circuit are 3 A, 4 A and 5 A. What is the current leaving it?

3 / 16

Category: Basic Electricity

3. Voltage across the 60 ohm resistor is______

 

4 / 16

Category: Basic Electricity

4. Calculate the resistance between A and B

5 / 16

Category: Basic Electricity

5. Calculate the equivalent resistance between A and B

6 / 16

Category: Basic Electricity

6. Calculate the equivalent resistance between A and B

7 / 16

Category: Basic Electricity

7. What is the value of x if the current in the circuit is 5 A?

 

8 / 16

Category: Basic Electricity

8. The total resistance between A and B are?

9 / 16

Category: Basic Electricity

9. The voltage across the open circuit is?

10 / 16

Category: Basic Electricity

10. Calculate the equivalent resistance between A and B

11 / 16

Category: Basic Electricity

11. Calculate the total resistance between the points A and B.

12 / 16

Category: Basic Electricity

12. Calculate the total current in the circuit

13 / 16

Category: Basic Electricity

13. Find the voltage across the 6 ohm resistor

 

14 / 16

Category: Basic Electricity

14. If the current through x ohm resistance in the circuit is 5A, find the value of x

15 / 16

Category: Basic Electricity

15. The voltage across the short is?

16 / 16

Category: Basic Electricity

16. Find the current in the circuit.

 

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Unit- 2 : Electric and Magnetic Circuits

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2nd Semester

FEEE Unit-2.1 : Concept of EMF, Current, Potential Difference, Power and Energy

Fundamentals of Electrical & Electronics Engineering

Diploma in Engineering & Technology

2nd Semester - Common for all branches

1 / 13

Category: AC Fundamental

1. Average power taken by a pure capacitor is –

2 / 13

Category: Magnetic Circuit

2. Induced potential difference due to motion of magnet with respect to the coil is known as -

3 / 13

Category: Basic Electricity

3. Instantaneous power in inductor is proportional to the –

4 / 13

Category: Basic Electricity

4. S.I unit of Power is –

5 / 13

Category: Basic Electricity

5. The flow of electron in solids is due to –

6 / 13

Category: Basic Electricity

6. In case of D.C –

7 / 13

Category: Basic Electricity

7. Insulating material can –

8 / 13

Category: Basic Electricity

8. Three lamps are connected in parallel across the voltage source. What happen if one lamp will burn out? –

9 / 13

Category: Basic Electricity

9. S.I unit of conductance is –

10 / 13

Category: Basic Electricity

10. 1 coulomb charge equals the charge of –

11 / 13

Category: Basic Electricity

11. Electric pressure is also called –

12 / 13

Category: Basic Electricity

12. KWh is the unit of -    

13 / 13

Category: Basic Electricity

13. Current & Potential Difference both can be measured using –

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2nd Semester

FEEE Unit-2.2 : M.M.F, magnetic force, permeability, hysteresis loop, reluctance, leakage factor, BH curve and hysteresis loss, eddy current loss. Analogy between electric and magnetic circuits

Fundamentals of Electrical & Electronics Engineering

Diploma in Engineering & Technology

2nd Semester - Common to all branch

1 / 20

Category: Basic Electricity

1. To obtain a high value of capacitance, the permittivity of dielectric medium should be –

2 / 20

Category: Magnetic Circuit

2. Which of the following is unit less?

3 / 20

Category: Magnetic Circuit

3. The unit of magnetic flux is –

4 / 20

Category: Magnetic Circuit

4. In a magnetic material hysteresis loss takes place primarily due to –

5 / 20

Category: Magnetic Circuit

5. Magnetic field is proportional to the –

6 / 20

Category: Magnetic Circuit

6. Magnetic lines of forces –

7 / 20

Category: Magnetic Circuit

7. Magnetic field strength is

8 / 20

Category: Magnetic Circuit

8. Electric field & magnetic field are interrelated and are known as –

9 / 20

Category: Magnetic Circuit

9. M.M.F in a magnetic circuit is corresponding to ……… in an electric circuit-

10 / 20

Category: Magnetic Circuit

10. A coil of many circular turns of wire wrapped in the shape of a cylinder is known as -

11 / 20

Category: Magnetic Circuit

11. In a electric circuit MMF is similar to

12 / 20

Category: Magnetic Circuit

12. Magnetic field has -

13 / 20

Category: Magnetic Circuit

13. Magnetic circuit is a closed path followed by –

14 / 20

Category: Magnetic Circuit

14. Hysteresis loss least depends on –

15 / 20

Category: Magnetic Circuit

15. Paramagnetic materials are –

16 / 20

Category: Magnetic Circuit

16. The reciprocal of permeability is –

17 / 20

Category: Magnetic Circuit

17. Unit of magnetic flux density is in S.I.

18 / 20

Category: Magnetic Circuit

18. Strength of the electromagnet can be increased by increasing –

19 / 20

Category: Magnetic Circuit

19. S.I unit of Reluctance-

20 / 20

Category: AC Fundamental

20. Absolute permittivity of dielectric medium is represented as –

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2nd Semester

FEEE Unit-2.3 : Electromagnetic induction: Faraday’s laws , Lenz’s law

Fundamentals of Electrical & Electronics Engineering

Diploma in Engineering & Technology

2nd Semester - Common to all branch

1 / 4

Category: Magnetic Circuit

1. The induced E.M.F. and current always oppose the cause of producing them is according to which law?

2 / 4

Category: Magnetic Circuit

2. An open coil has –

3 / 4

Category: Magnetic Circuit

3. If current in a conductor increases then according to Lenz's law self-induced voltage will –

4 / 4

Category: Magnetic Circuit

4. The principle of electromagnetic induction was propounded by

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2nd Semester

FEEE Unit-2.4 : Dynamically induced emf; Statically induced emf; Principle of self and mutual inductance

Fundamentals of Electrical & Electronics Engineering

Diploma in Engineering & Technology

2nd Semester - Common to all branch

1 / 6

Category: AC Fundamental

1. Sparking may occurs when a load is switched off due to the presence of –

2 / 6

Category: AC Machines & Transformer

2. In which device is the principle of statically induced E.M.F used?

3 / 6

Category: DC Machines

3. Principle of dynamically induced E.M.F is used in a –

4 / 6

Category: Magnetic Circuit

4. Statically induced E.M.F’s magnitude depends on the –

5 / 6

Category: Magnetic Circuit

5. Which is the property of a coil by which a counter E.M.F is induced when the current through the coil changes?

6 / 6

Category: Basic Electricity

6. Electrolysis is possible with –

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2nd Semester

FEEE Unit-2.5 : Energy stored in magnetic circuit

Fundamentals of Electrical & Electronics Engineering

Diploma in Engineering & Technology

2nd Semester - Common to all branch

1 / 12

Category: AC Fundamental

1. In a capacitor, the electrical energy is stored in –

2 / 12

Category: AC Fundamental

2. The energy stored by a capacitor is given by –

3 / 12

Category: Magnetic Circuit

3. If the current in a coil having a constant inductance of L henrys grows at a uniform rate, what is the value of the average current?

4 / 12

Category: Magnetic Circuit

4. Calculate the value of energy stored in an inductor if the value of inductance is 10H and 2 A of current flows through it. – 

5 / 12

Category: Magnetic Circuit

5. If both the number of turns and the core length of an inductive coil are doubled, then its self-inductance will be –

6 / 12

Category: Magnetic Circuit

6. Calculate the emf induced in an inductor if the inductance is 10H and the current is 2 A in 4 s.

7 / 12

Category: Magnetic Circuit

7. If the current in a coil having a constant inductance of L henrys grows at a uniform rate, what is the value of the average current?

8 / 12

Category: Magnetic Circuit

8. Calculate the value of stored energy in an inductor if the value of inductance is 20 H and 4 A of current flows through it.

9 / 12

Category: Magnetic Circuit

9. In an iron cored coil the iron core is removed so that the coil becomes an air cored coil. The inductance of the coil will –

 

10 / 12

Category: Magnetic Circuit

10. Higher the self-inductance of a coil –

11 / 12

Category: Magnetic Circuit

11. What is the power in the magnetic field if the current in a coil has a constant inductance of L henrys grows at a uniform rate?

12 / 12

Category: Magnetic Circuit

12. Energy stored in a magnetic field is given by –

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2nd Semester

FEEE Unit-2.6 : Flemming’s Left Hand Rule and Right Hand Rule

Fundamentals of Electrical & Electronics Engineering

Diploma in Engineering & Technology

2nd Semester - Common to all branch

1 / 5

Category: Magnetic Circuit

1. Which rule do we use to predict the direction of movement of a current carrying wire in a magnetic field?

2 / 5

Category: Magnetic Circuit

2. A magnetic field like this is called –

3 / 5

Category: Magnetic Circuit

3. When a permanent magnet is cut half what will be the result?

4 / 5

Category: DC Machines

4. The direction of rotation of a dc generator is found out by

5 / 5

Category: DC Machines

5. The direction of rotation of a dc motor is found out by

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2nd Semester

FEEE Unit-2.7 : Simple problems on Electric & Magnetic Circuit

Fundamentals of Electrical & Electronics Engineering

Diploma in Engineering & Technology

2nd Semester - Common to all branch

1 / 2

Category: Basic Electricity

1. If energy required to heat up a heater coil is 4 KWh and the energy loss is 20%, then what is the energy input?

2 / 2

Category: Basic Electricity

2. A bulb consumes 100 W when supply voltage is 200 V. Then find the energy consumed in 30 minutes.

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Unit- 3 : AC Circuits

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2nd Semester

FEEE Unit- 3.1 : Concept of Angular speed, Cycle, Frequency, Periodic time, Amplitude, RMS value, Average value, Form Factor, Peak Factor, impedance, phase and phase difference.

Fundamental of Electrical & Electronics Engineering

Diploma in Engineering & Technology

2nd Semester - Common to all branches

1 / 20

Category: AC Fundamental

1. The most important advantage of using electrical energy in the form of a AC is –

2 / 20

Category: AC Fundamental

2. A sine wave has a frequency of 50 Hz. Its angular frequency is _______radian/second.

3 / 20

Category: AC Fundamental

3. Two waves of the same frequency have opposite phase when the phase angle between them is –

4 / 20

Category: AC Fundamental

4. Form factor of half wave rectified ac is-

5 / 20

Category: AC Fundamental

5. An Alternating Current has a periodic time of 0.02 sec, then the frequency will be –

6 / 20

Category: AC Fundamental

6. An alternating voltage is given by, V = 10 sin 2πt. The frequency of the AC signal is –

7 / 20

Category: AC Fundamental

7. RMS value can be defined based on which of the following? –

8 / 20

Category: AC Fundamental

8. Average value can be defined based on which of the following? –

9 / 20

Category: AC Fundamental

9. Capacitive Susceptance is a measure of –

10 / 20

Category: AC Fundamental

10. The peak value of a sine wave is 200 V. Its average value is –

11 / 20

Category: AC Fundamental

11. A heater is rated as 230 V, 10 kW. The value 230 V refers to –

12 / 20

Category: AC Fundamental

12. From heating point of view ID.C. is equal to –

13 / 20

Category: AC Fundamental

13. The square waveform of current has following relation between R.M.S. value and average value –

14 / 20

Category: AC Fundamental

14. If two sinusoids of the same frequency but of different amplitudes and phase angles are subtracted, the resultant is –

15 / 20

Category: AC Fundamental

15. A current is set to be alternating when it changes –

16 / 20

Category: AC Fundamental

16. The form factor for a sinusoidal a.c. voltage is – 

17 / 20

Category: AC Fundamental

17. RMS value can be defined based on which of the following? –

18 / 20

Category: AC Fundamental

18. Form factor of square wave is-

19 / 20

Category: AC Fundamental

19. The RMS value of a sine wave is 100 A. Its peak value is –

20 / 20

Category: AC Fundamental

20. Real part and imaginary part of admittance are respectively –

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2nd Semester

FEEE Unit-3.2 : Representation of sinusoidal quantities in (i) exponential form (ii) complex form and (iii) polar form

Fundamentals of Electrical & Electronics Engineering

Diploma in Engineering & Technology

2nd Semester - Common to all branch

1 / 4

Category: Basic Electricity

1. What is the RMS value of the current if the maximum value of sine wave current is 100 A?

2 / 4

Category: AC Fundamental

2. The equation for instantaneous value of alternating current is, then time period will be –

3 / 4

Category: AC Fundamental

3. The frequency of an AC voltage in India, is–

4 / 4

Category: AC Fundamental

4. The frequency of an AC voltage,e= 100 cos 314t , will be –

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2nd Semester

FEEE Unit-3.3 : Expressions of voltage and current through pure resistance, inductance and capacitance with sinusoidal excitation and phasor representation

Fundamentals of Electrical & Electronics Engineering

Diploma in Engineering & Technology

2nd Semester - Common to all branch

1 / 5

Category: AC Fundamental

1. In a series R-C circuit, the applied voltage –

2 / 5

Category: AC Fundamental

2. In a R-L-C circuit, power loss takes place is – 

3 / 5

Category: AC Fundamental

3. In series R-L circuit power factor can be defined as –

4 / 5

Category: AC Fundamental

4. In an AC circuit (Sine wave) with R and L in series –

5 / 5

Category: Basic Electricity

5. For a sinusoidal AC voltage, amplitude factor is –

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2nd Semester

FEEE Unit-3.4 : Study of simple R-L, R-C, R-L-C series and parallel circuits with sinusoidal excitation and phasor representation

Fundamentals of Electrical & Electronics Engineering

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1 / 5

Category: AC Fundamental

1. In an AC circuit (Sine wave) with R and L in series –

2 / 5

Category: AC Fundamental

2. In a series R-C circuit, the applied voltage –

3 / 5

Category: AC Fundamental

3. For a sinusoidal AC voltage, amplitude factor is –

4 / 5

Category: AC Fundamental

4. In a R-L-C circuit, power loss takes place is –

5 / 5

Category: AC Fundamental

5. In series R-L circuit power factor can be defined as –

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2nd Semester

FEEE Unit-3.5 : Concept of impedance, impedance triangle, power factor, active, reactive and apparent power, power triangle

Fundamentals of Electrical & Electronics Engineering

Diploma in Engineering & Technology

2nd Semester - Common to all branch

1 / 20

Category: Circuit Theory & Network

1. In a R-L-C series circuit, if the capacitive reactance is greater than the inductive reactance, then the power factor will be –

2 / 20

Category: Circuit Theory & Network

2. In a R-L-C series circuit, if the inductive reactance is greater than the capacitive reactance, then the power factor will be –

3 / 20

Category: Circuit Theory & Network

3. What will be the Q-factor of a circuit, if power factor is 0.9?

4 / 20

Category: Circuit Theory & Network

4. The component of current which is in quadrature with supply voltage, is –

5 / 20

Category: Circuit Theory & Network

5. Which of the following will not be affected due to change in R?

6 / 20

Category: Circuit Theory & Network

6. For a pure inductive circuit, the average demand of power from the source will be –

7 / 20

Category: Circuit Theory & Network

7. In any AC circuit always –

8 / 20

Category: Circuit Theory & Network

8. A parallel AC circuit in resonance will –

9 / 20

Category: AC Fundamental

9. Capacitors for power factor correction are rated in -

10 / 20

Category: AC Fundamental

10. An electric incandescent lamp has the power factor of –

11 / 20

Category: AC Fundamental

11. Reactive power is the product of

12 / 20

Category: AC Fundamental

12. The power factor of an AC circuit lies between –

13 / 20

Category: AC Fundamental

13. The power factor of practical inductor is

14 / 20

Category: AC Fundamental

14. Unit of impedance is

15 / 20

Category: AC Fundamental

15. In series R-L circuit power factor can be defined as - 

16 / 20

Category: AC Fundamental

16. The alternative name/names for active power is/are –

17 / 20

Category: AC Fundamental

17. If the inductive reactance of a coil is 6 ohm and internal resistance is 8 ohm, then the impedance will be –

18 / 20

Category: AC Fundamental

18. A pure capacitance connected across 50 Hz, 230 V supply consumes 0.04 W. This consumption is attributed to –

19 / 20

Category: AC Fundamental

19. In an AC circuit a low value of KVAR compared with KW indicates –

20 / 20

Category: AC Fundamental

20. From the following when capacitive reactance will be more?

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2nd Semester

FEEE Unit-3.6 : Voltage and Current relationship in Star and Delta connections

Fundamentals of Electrical & Electronics Engineering

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1 / 2

Category: AC Machines & Transformer

1. With the star delta starter the voltage across the motor winding at starting is – 

2 / 2

Category: Basic Electricity

2. Three nos 6-ohm resistances are connected in delta. Value of resistances if connected in star – 

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Unit- 4 : Transformers and Machines

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2nd Semester

FEEE Unit- 4.1 : Transformer and Machines

Fundamentals of Electrical & Electronics Engineering

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2nd Semester

FEEE Unit-4.2 : General construction and principle of different type of transformers

Fundamentals of Electrical & Electronics Engineering

Diploma in Engineering & Technology

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FEEE Unit-4.3 : EMF equation and transformation ratio of transformers

Fundamentals of Electrical & Electronics Engineering

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FEEE Unit-4.4 : Auto-transformers

Fundamentals of Electrical & Electronics Engineering

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FEEE Unit-4.5 : Construction and working principle of motors

Fundamentals of Electrical & Electronics Engineering

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FEEE Unit-4.6 : Types of motors and applications

Fundamentals of Electrical & Electronics Engineering

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FEEE Unit-4.7 : Simple problems on transformers and electrical machines

Fundamentals of Electrical & Electronics Engineering

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1 thought on “MCQs on Fundamental of Electrical & Electronics Engineering / 2nd Sem”

  1. Pingback: Sample Question and Answer for FEEE Lab Viva-voce - Free Electrical Notebook - Theory and Practical

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