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LMRC JE 2018 EE: Practice Quiz 23

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Question 1

For the same kVA rating, the leakage flux in induction motor is……………………that of transformer.

Question 2

The product of emitter efficiency (γ) and Base transport factor (β*) for a BJT is equal to:

Question 3

In a circuit arrangement as shown, which among the voltmeter will depict 0 volts, when a battery of 6 volts is connected across it?
00016x01

Question 4

If a wire is melted and recast to half of its length, then the new resistance is

Question 5

What is the approximate rotor efficiency of a 6-pole, 3-phase induction motor running at

Question 6

A single-stage amplifier has a voltage gain of 100. The load connected to the collector is 500Ω and its input impedance is 1kΩ. Two such stages are connected in cascade through an R-C coupling. The overall gain is

Question 7

Soft magnetic materials have –

Question 8

The waveform shown in figure will occur during testing of alternator using oscilloscope. This waveform will occur when there is:
altpatt

Question 9

The current entering the terminal of an element is given by:
i = (6t2 – 2t) A
The total charge entering the terminal between t = 1 s and t = 3s is

Question 10

If the fault current is 2000 A, the relay setting 50% and C.T. ratio 400/5, the plug setting multiplier will be
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Dec 13ESE & GATE EE