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

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Unit- 1 : Electric and Magnetic Circuits

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Created on By Pranab Kumar ChandraElectrical Notebook

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. Resistance of any circuit depends on –

2 / 20

Category: Basic Electricity

2. If a capacitor of capacitance 9.2F has a voltage of 22.5V across it. Calculate the energy of the capacitor.

3 / 20

Category: Basic Electricity

3. If the length of a wire is doubled and diameter is halved, then the resistance will become –

4 / 20

Category: Basic Electricity

4. The formula used to find the capacitance C is __________

5 / 20

Category: Basic Electricity

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

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Category: Basic Electricity

6. 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.

7 / 20

Category: Basic Electricity

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

8 / 20

Category: Basic Electricity

8. A 2 micro farad capacitor connected across 10 volt DC. Value of current is – 

9 / 20

Category: Basic Electricity

9. A choke coil is a coil having-

10 / 20

Category: Basic Electricity

10. What is the resistivity of Copper?

11 / 20

Category: Basic Electricity

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

12 / 20

Category: Basic Electricity

12. If the voltage across a capacitor is constant, then current passing through it is ________

13 / 20

Category: Basic Electricity

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

14 / 20

Category: Basic Electricity

14. The Inductor doesn’t allow sudden changes in

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Category: Basic Electricity

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

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Category: Basic Electricity

16. Frequency of Direct Current is

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Category: Basic Electricity

17. 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?

18 / 20

Category: Basic Electricity

18. Which, among the following is a unit for resistivity?

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Category: Basic Electricity

19. The expression for energy of an inductor

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Category: Basic Electricity

20. The capacitor doesn’t allow sudden changes in

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Created on By Pranab Kumar ChandraElectrical Notebook

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: AC Fundamental

1. The length of a phasor represents the amplitude

2 / 20

Category: Basic Electricity

2. The unit of frequency is the hertz

3 / 20

Category: Basic Electricity

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

4 / 20

Category: Basic Electricity

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

5 / 20

Category: Basic Electricity

5. 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

6 / 20

Category: Basic Electricity

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

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Category: Basic Electricity

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

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Category: Basic Electricity

8. The duty cycle of a pulse waveform with a pulse width of 10 µs and a period of 100 µs is 25%.

9 / 20

Category: Basic Electricity

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

10 / 20

Category: Basic Electricity

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

11 / 20

Category: Basic Electricity

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

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Category: Basic Electricity

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

13 / 20

Category: Basic Electricity

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

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Category: Basic Electricity

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

15 / 20

Category: Basic Electricity

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

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Category: Basic Electricity

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

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Category: Basic Electricity

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

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Category: Basic Electricity

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

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Category: Basic Electricity

19. A phasor represents

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Category: Basic Electricity

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

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32
Created on By Pranab Kumar ChandraElectrical Notebook

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. Ideal voltage source has-

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Category: Basic Electricity

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

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Category: Basic Electricity

3. Active circuit have -

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Category: Basic Electricity

4. Which is the most cost efficient connection?

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Category: Basic Electricity

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

6 / 16

Category: Basic Electricity

6. Ideal voltage source has-

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Category: Basic Electricity

7. Batteries are generally connected in______

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

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Category: Basic Electricity

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

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Category: Basic Electricity

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

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Category: Basic Electricity

12. Many resistors connected in series will?

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Category: Basic Electricity

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

14 / 16

Category: Basic Electricity

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

15 / 16

Category: Basic Electricity

15. The energy per unit charge is

16 / 16

Category: Basic Electricity

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

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12
Created on By Pranab Kumar ChandraElectrical Notebook

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 total current in the circuit

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Category: Basic Electricity

2. The voltage across the short is?

3 / 16

Category: Basic Electricity

3. The voltage across the open circuit is?

4 / 16

Category: Basic Electricity

4. Calculate the equivalent resistance between A and B

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Category: Basic Electricity

5. Find the current in the circuit.

 

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Category: Basic Electricity

6. The total resistance between A and B are?

7 / 16

Category: Basic Electricity

7. Calculate the resistance between A and B

8 / 16

Category: Basic Electricity

8. Voltage across the 60 ohm resistor is______

 

9 / 16

Category: Basic Electricity

9. Calculate the current across the 20 ohm resistor

10 / 16

Category: Basic Electricity

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

11 / 16

Category: Basic Electricity

11. Calculate the equivalent resistance between A and B

12 / 16

Category: Basic Electricity

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

13 / 16

Category: Basic Electricity

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

 

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Category: Basic Electricity

14. Find the voltage across the 6 ohm resistor

 

15 / 16

Category: Basic Electricity

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

16 / 16

Category: Basic Electricity

16. Calculate the equivalent resistance between A and B

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The average score is 40%

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Unit- 2 : Electric and Magnetic Circuits

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32
Created on By Pranab Kumar ChandraElectrical Notebook

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. In case of D.C –

4 / 13

Category: Basic Electricity

4. S.I unit of Power is –

5 / 13

Category: Basic Electricity

5. Instantaneous power in inductor is proportional to the –

6 / 13

Category: Basic Electricity

6. Insulating material can –

7 / 13

Category: Basic Electricity

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

8 / 13

Category: Basic Electricity

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

9 / 13

Category: Basic Electricity

9. Electric pressure is also called –

10 / 13

Category: Basic Electricity

10. KWh is the unit of -    

11 / 13

Category: Basic Electricity

11. S.I unit of conductance is –

12 / 13

Category: Basic Electricity

12. 1 coulomb charge equals the charge of –

13 / 13

Category: Basic Electricity

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

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9
Created on By Pranab Kumar ChandraElectrical Notebook

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: AC Fundamental

1. Absolute permittivity of dielectric medium is represented as –

2 / 20

Category: Magnetic Circuit

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

3 / 20

Category: Magnetic Circuit

3. Hysteresis loss least depends on –

4 / 20

Category: Magnetic Circuit

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

5 / 20

Category: Magnetic Circuit

5. Magnetic field has -

6 / 20

Category: Magnetic Circuit

6. S.I unit of Reluctance-

7 / 20

Category: Magnetic Circuit

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

8 / 20

Category: Magnetic Circuit

8. In a electric circuit MMF is similar to

9 / 20

Category: Magnetic Circuit

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

10 / 20

Category: Magnetic Circuit

10. The reciprocal of permeability is –

11 / 20

Category: Magnetic Circuit

11. Paramagnetic materials are –

12 / 20

Category: Magnetic Circuit

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

13 / 20

Category: Magnetic Circuit

13. Magnetic lines of forces –

14 / 20

Category: Magnetic Circuit

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

15 / 20

Category: Magnetic Circuit

15. The unit of magnetic flux is –

16 / 20

Category: Magnetic Circuit

16. Magnetic field is proportional to the –

17 / 20

Category: Magnetic Circuit

17. Magnetic field strength is

18 / 20

Category: Magnetic Circuit

18. Magnetic circuit is a closed path followed by –

19 / 20

Category: Magnetic Circuit

19. Which of the following is unit less?

20 / 20

Category: Basic Electricity

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

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Created on By Pranab Kumar ChandraElectrical Notebook

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 principle of electromagnetic induction was propounded by

2 / 4

Category: Magnetic Circuit

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

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. An open coil has –

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10
Created on By Pranab Kumar ChandraElectrical Notebook

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: Magnetic Circuit

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

2 / 6

Category: Magnetic Circuit

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

3 / 6

Category: AC Machines & Transformer

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

4 / 6

Category: DC Machines

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

5 / 6

Category: AC Fundamental

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

6 / 6

Category: Basic Electricity

6. Electrolysis is possible with –

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3
Created on By Pranab Kumar ChandraElectrical Notebook

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. Energy stored in a magnetic field is given by –

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. 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?

6 / 12

Category: Magnetic Circuit

6. 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.

7 / 12

Category: Magnetic Circuit

7. 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 –

 

8 / 12

Category: Magnetic Circuit

8. Higher the self-inductance of a coil –

9 / 12

Category: Magnetic Circuit

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

10 / 12

Category: Magnetic Circuit

10. 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?