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RRB/SSC JE Electrical 2019 || Weekly Quiz 2

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Question 1

Three equal impedances are first connected in delta across a 3-phase balanced supply. If the same impedances are connected in star across the same supply

Question 2

In 1-phase series RL circuit fed by voltage source, the resistance and reactance values are 4 ohm each. In this circuit

Question 3

A CRT with parallel deflection plate is 40 cm long and 10 mm apart have

. Screen is 50 cm apart from center of parallel plates. Calculate the input voltage required to deflect the beam 5 cm.

Question 4

A 1 – phase energy meter does 10 revolution in 90 seconds. Meter constant for instrument is 1000, then power consumed by load is –

Question 5

A 3 phase 20kVA load has power factor 0.866. If power is measured by two wattmeter method then find reading of first wattmeter when power factor is leading –

Question 6

The B-H curve for ______________ will be a straight line passing through the origin.

Question 7

In a single phase induction motor at start, the two revolving fields produce

Question 8

A universal motor is one which

Question 9

The m.m.f. produced by a single phase winding is____________.

Question 10

In motor circuit static frequency changers are used for __________.

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ESE & GATE EE Electric Circuits

Dec 8ESE & GATE EE