SSC JE Electrical Engineering 2015

Instructions

For the following questions answer them individually

Question 131

When a source is delivering maximum power to the load, the efficiency will be

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Question 132

For the circuit shown, the Norton’s equivalent current source as terminals A & B is given

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Question 133

The voltage across the 1 kΩ resistor of the network shown in the given figure is

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Question 134

The internal resistance of a voltage source is 10  and has 10 volts at its terminals. Find the maximum power that can be transferred to the load.

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Question 135

Mutual inductance between two coils is 4 H. If current in one coil changes at the rate of 2 A/sec, then emf induced in the other coil is

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Question 136

If the number of turns of a coil is increased, its inductance

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Question 137

The e.m.f. induced in a coil of N turns is given by

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Question 138

When the current through the coil of an electromagnet reverses, the

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Question 139

A short shunt compound generator supplies a load current of 100 A at 250 V. The generator has the following winding ressitances :

shunt field = 130 Ω, armature = 0.1 Ω and the brush drop is 1 V per brush

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Question 140

As the load is increased, the speed of a dc shunt motor

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