SSC JE Electrical Engineering 25th May 2014 Shift-1

Instructions

For the following questions answer them individually

Question 161

EMF induced in a coil rotating in a uniform magnetic field will be maximum when the

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Question 162

If resistance is 20 Ω and inductance is 2H in a RL series circuit, then time constant of this circuit will be

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Question 163

When the rotor of a three phase induction motor is blocked the slip is

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Question 164

The positive, negative and zero sequence impedances of 3-phase synchronous generator are j 0.5 pu, j 0.3 pu and j 0.2 pu respectively. When symmetrical fault occurs on the machine terminals. Find the fault current. The generator neutral is grounded through reactance of j0.1 pu

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Question 165

Transient current in RLC circuit is oscillatory when the value of R is

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Question 166

For average values of load current, current chopping occurs more frequently in

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Question 167

A BJT is said to be operating in the saturation region if

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Question 168

The mutural inductance between two unity coupled coils of 9 H and 4 H will be

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Question 169

Determine the voltage at point C shown below with respect to ground

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Question 170

The efficiency normally obtained in a circuit under the conditions of maximum power transfer is

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