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LMRC JE 2018 EE: Practice Quiz 17

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Question 1

Assuming diodes

and

in Fig. 33.18 to be ideal, the current through them will be

Question 2

In a moving coil galvanometer, the deflection becomes one-half when the galvanometer is shunted by a

resistor. The galvanometer resistance is

Question 3

If the magnetising force required at the working flux density in Fig. is 400 AT/m (from B-H curve), the required number of turns is

Question 4

If the circuit shown in Fig. is made to resonate, the magnitude of circuit current will be
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Question 5

An industrial concern has a maximum demand of 500 kVA at 0.8 p.f. lagging and an annual load factor of 60%. If electric power is supplied from a grid system at Rs. 125 per kVA of maximum demand plus 5 paise per unit, the cost per unit is

Question 6

A potentiometer wire is 10 m long. It has a resistance of

It is connected in series with a battery of e.m.f. 3 V and a resistance of

. The potential gradient along the wire in volt/meter is

Question 7

The reluctance of a magnetic circuit depends on as………

Question 8

In the below figure the minimum input voltage required (V_BE = 0.7 V) to turn on the transistor is ?

Question 9

A current of (120 – j 50) A flows through a circuit when the applied voltage is (8 + j 2) V. What is the magnitude of circuit impedance?

Question 10

8-pole, 3-phase induction motor has full-load slip of 4%. The rotor resistance and standstill reactance per phase are

and

respectively. The speed at which maximum torque occurs is

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ESE & GATE EE General

Jul 2ESE & GATE EE