SSC JE Electrical Engineering 2015


For the following questions answer them individually

Question 191

A 150 V moving iron voltmeter of accuracy class 1.0 reads 75 V when used in a circuit under standard conditions. The maximum possible percentage error in the reading is

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Question 192

A dc voltmeter has a sensitivity of 1000 $$\frac{Ω}{volts}$$ When its measures half full scale in 100 V range, the current through the voltmeter will be

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Question 193

A Lissajous pattern on an oscilloscope has 5 horizontal tangencies and 2 vertical tangencies. The frequency of the horizontal input is 100 Hz. The frequency if the vertical
input will be

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Question 194

The no load input power to a transformer is practically equal to______loss in the transformer

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Question 195

The primary and secondary windings of a transformer are wound on the top of each other in order to reduce.

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Question 196

Leakage flux in a transformer occurs because

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Question 197

.The no load primary current $$I_{0}$$, is about______of full load primary current of a transformer.

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Question 198

Which of the following Braking is not suitable for motors?

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Question 199

An eight pole wound rotor induction motor operating on 60 Hz supply is driven at 1800 rpm by a prime mover in the opposite direction of revolving magnetic field. The frequency of rotor current is

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Question 200

.If stator voltage of a squirrel cage induction motor is reduced to 50 percent of its rated value, torque developed is reduced by how many percentage of its full load value?

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