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Control the Speed of DC Shunt Motor ABOVE Rated Speed & Draw the Speed Characteristics

Leave a Comment / DC Machines & Transformer / By

Experiment No.: 3(A) Experiment Name: Control the Speed of DC Shunt Motor Above Rated Speed & Draw the Speed Characteristics. Objective: To control the speed of a DC Shunt Motor by field control method. To draw the field current vs. speed characteristics. Theory: The flux of a DC motor can be changed by changing the …

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Plot the O.C.C. of a D. C. Generator & find the Critical Resistance

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Experiment No.: 1 Experiment Name: Plot the O.C.C. of a D. C. Generator & find the Critical Resistance. Objective: To plot open circuit characteristics of a DC shunt generator To find critical resistance from the characteristics curve Theory: In a DC Generator an expression for the voltage generated (E) in the armature winding can be …

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Use Clamp-on meter / digital multi-meter for measurement of AC/DC current, AC/DC voltage

Leave a Comment / Electrical & Electronics Measurement / By

Experiment No.: 2 Experiment Name: Use of Clamp-on meter / digital multi-meter for measurement of AC/DC current, AC/DC voltage Objective: To measure DC voltage and current To measure AC current by using Clamp-on meter Theory: Multimeter: Multimeter is a versatile compact form of electrical instrument which can measure multirange DC voltage, AC voltage, resistance and …

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Use Kelvin’s double bridge for measurement of low resistance.

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Experiment No.: 1 Experiment Name: Use of Kelvin’s double bridge for measurement of low resistance. Objective: To use Kelvin’s double bridge for measurement of low resistance. Theory: A Kelvin Bridge is a measuring instrument used to measure unknown electrical resistors below 1 ohm. It is specifically designed to measure resistors that are constructed as four …

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Different types of Water Turbines used in Large Hydro Power Plant

1 Comment / Intro to Electric Generation Systems Lab / By

Experiment No.: 1 Experiment Name: Study on different types of Water Turbines used in large hydro power plant Objective: To study Kaplan Turbine To study Francis Turbine To study Pelton Wheel Turbine Theory: Kaplan Turbine: Kaplan Turbine works on the principle of axial flow reaction. In axial flow turbines, the water flows through the runner …

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Characteristics of Zener Diode and Finding the Breakdown Voltage

Leave a Comment / Analog & Digital Electronics / By

Experiment No.: 1 Experiment Name: Plot the characteristics of Zener diode and find the breakdown voltage. Objective: To plot the characteristics of Zener Diode. To find the breakdown voltage. Theory: An ideal P-N Junction diode does not conduct in reverse biased condition. A zener diode conducts excellently even in reverse biased condition. These diodes operate …

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STUDY OF FULLY CONTROLLED FULL WAVE RECTIFIER USING SCR

1 Comment / Power Electronics & Drives / By

Experiment No.: 3 Experiment Name: Study of Fully Controlled Full Wave Rectifier using SCR Objective: To study Fully Controlled Full Wave Rectifier using SCR Theory: The ac input voltage is fed to the input of a power transformer TR which has centre-tapped secondary. Thus, the voltage Vi1 and Vi2 developed across the two halves of the secondary are …

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STUDY OF SERIES INVERTER USING SCR

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Experiment No.: 2 Experiment Name: To Study Series Inverter using SCR Objective: To study the mechanism of working of inverter using SCR. Theory: In series inverter, the commutating elements L and C are connected in series with the load. This constitutes a series RLC resonant circuit. The Two SCRs are used to produce the halves (positive and …

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Determination of negative temperature coefficient and calibration of a Thermister

1 Comment / Measurement and Control / By

Experiment No.: 5 Experiment Name: Determination of negative temperature coefficient and calibration of a Thermister Objective: To determine negetive temperature coefficient and calibrate a Thermistor Theory: Thermistor (10 K): Thermistor is a contraction of a term thermal resistor. Although positive temperature co-efficient (P.T.C) of unit exhibit an increase in the value of resistance with increase …

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Temperature measurement using Thermocouple.

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Experiment No.: 4 Experiment Name: Temperature measurement using Thermocouple. Objective: To measure temperature by using thermocouple Theory: Thermocouple (J/K type): The Thermocouple is the most commonly used type of all the temperature sensing devices due to its simplicity, ease of use and their speed of response to changes in temperature, due mainly to their small …

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