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BHEL ET 2019: Technical Quiz 4

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Question 1

An inverse z-transform x(kT) of

Question 2

Which one of the following statements is correct?
LTI system is causal

Question 3

Compact Gas Insulated Switchgear System comprises of:

Question 4

Reactive power compensation is applied at the midpoint of an EHV line of total reactance 0.2 p.u. so as to maintain the voltage there at 0.98 p.u. The voltage at both ends of the line is 1∠0^o p.u. The steady state power transfer limit, in p.u. is

Question 5

A 3-phase thyristor controlled rectifier is feeding a purely resistive load on the DC side. The firing angle of the 6 thyristors of the converter is 90 °. AC side is connected to a balanced 3-phase supply. Considering only the fundamental of the input current, active power P and reactive power Q estimated at the AC side of the rectifier are

Question 6

Which one of the following statements is not correct for a MOSFET?

Question 7

In RLC circuits, the current at resonance is

Question 8

The circuit given below is constituted by an iron-cored coil and a capacitor. At resonance, the circuit behaves like

Question 9

To have best quality waveform, oscilloscope will trigger:

Question 10

What will be the voltmeter reading in the circuit?
circuit2

Question 11

A 6-pole lap wound d.c. machine armature has 720 conductors and it draws 50 A from supply mains. What is the flux distribution produced by the armature reaction per pole?

Question 12

What is the power transferred conductively from primary to secondary of an auto-transformer having trans-formation ratio of 0.8 supplying a load of 3 kW?

Question 13

What are the output bits S (Sum) and C (Carry) of a Half Adder having inputs A = 1 and B = 1 ?
S C

Question 14

The closed-loop transfer function of a system is

The system is

Question 15

What is the appropriate value of the gain margin in the Nyquist diagram given below?

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ESE & GATE EE General

Jun 15ESE & GATE EE