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BHEL ET 2019: Technical Quiz 3

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Question 1

The concentration of minority carriers in an extrinsic semiconductors under equilibrium is

Question 2

A comparator circuit is used to

Question 3

The transfer function of a low-pass RC network is

Question 4

If the poles of a system lie on the imaginary axis are simple, the system will be

Question 5

In the given circuit, the output Y equals which one of the following?

Question 6

The speed of repulsion motor at no load will be:

Question 7

Find the power consumed in single phase of the load as shown in the circuit?
T13-1

Question 8

The preferred methods of measuring low resistance and the resitance of cable insulation are respectively

Question 9

Wagner’s earthing device is used in A.C. bridges for

Question 10

In a series resonant circuit, maximum voltage across L occurs at

Question 11

At t=0, the switch S is thrown from b to a of the circuit as shown below. What are the values of v(0⁺) and i(0⁺)?

Question 12

Snubber circuits are used to protect thyristor from which of the following?

Question 13

What is the power factor of a single phase a.c. regulator feeding a resistive load?

Question 14

Mho relay is usually employed for the protection of

Question 15

In a ACSR conductor why is grease put between steel and aluminium conductors?

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Jun 23ESE & GATE EE