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ESE 2021 EE Technical Quiz -14

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Question 1

Full scale deflecting torque of 10A Moving Iron ammeter is. The rate of change of self-inductance of the instrument at full scale in is

Question 2

The voltage and current measured in a resistive network are 20V and 5A with accuracies of 2% and 1% respectively. Then the value of power (in Watts) will be

Question 3

What is the power of the given signal, x[n] = r[n – 1] – r[n – 6]

Question 4

Statement I: Differential relay is used for protection of generator, transformer windings

Statement II: Differential relay can detect through faults along with internal faults.

Question 5

Which of the following statements are correct?

1) Sensitivity of a DVM is a function of number of full digits.

2) There will be no change in count range of a DVM by attaching a ½ digit.

3) Voltage range of operation of a DVM gets doubled by attaching a ½ digit.

Question 6

Rectifier type instrument is

Question 7

For the given impedance in a star network, determine the sum of its equivalent delta impedances.

Question 8

A Q-meter is tuned into resonance at fundamental frequency with a resonating capacitance of 180pF. Resonance obtained at second harmonic with a resonating capacitance of 30pF. What is the self-capacitance of the coli?

Question 9

A PMMC meter rated as is used in rectifier type of instrument which uses full wave rectification. What is the sensitivity on sinusoidal A.C.?

Question 10

If the plot shown represents the pole-zero plot of open loop transfer function H(s). The value of H(s) at s = 1 is 10. The unity negative feedback closed loop transfer function is

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