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SSC JE / State Electricity Boards JE Electrical Exams QUIZ-5

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Question 1

A-4 pole, 75 kW,

Y-connected, 50 Hz, 440 V synchronous motor operates at rated condition with 0.8 p.f. leading. The motor efficiency excluding field and stator losses is 95% and

, what is the armature current?

Question 2

A 220 V d.c. series motor is taking a current of 40 A, Resistance of armature 0.5Ω and resistance of series field 0.25Ω. find the value of back emf induced in the armature?

Question 3

Utilization factor of lightning scheme depends on –

Question 4

An overhead line conductor has a cross-sectional area of 3.2 cm². It is supported on level supports of a span of 150 m. The specific weight of the conductor is 7800 kg/m³, and the working stress is 1050 kg/cm². What is the working tension?

Question 5

An ideal voltage source should have:

Question 6

In a particular measurement, wattmeter readings were 5000W and 1000W. If one of the meters have to be positive and the other being negative, then the power and power factor of the circuit is

Question 7

For the given circuit, the transfer characteristics are:

Question 8

An air-cored solenoid has length l=15 cm and inside diameter D=1.5 cm. If the coil has 900 turns and carries a current of 100 mA, the total flux within the solenoid is

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ESE & GATE EE General

Jun 19ESE & GATE EE