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DFCCIL Executive Rapid Quiz 21

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Question 1

Which of following is called Land of morning calm?

Question 2

Sun is higher than moon but moon is lower than star , while star is not lower than sun and sky is not lower than star, which is the highest and the lowest?

Question 3

What is the zero signal base current in the emitter bias circuit shown in Fig.? The transistor is of silicon.

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Question 4

A 18.65 kW, 220 V, 50 Hz, 4-pole, y-connected synchronous motor is running with a light load. The load angle is

(elect.) and back e.m.f. generated per phase in 110 V. If the armature resistance per phase is

and synchronous reactance/ phase is

the p.f. of the motor is …………..

Question 5

Generally ………… flip-flops are used in shift registers,

Question 6

The most commonly used cell is………..

Question 7

A parallel-plate capacitor is charged to a potential difference of V volts. After disconnecting the battery, the distance between the plates of the capacitor is increased using an insulated handle. As a result, the potential difference between capacitor plates

Question 8

A certain amplifier develops 80 W of output power. A d.c. power supply furnishes the amplifier 3 A at 40 V. The power supply draws 1.6 A form 120 V source.

The efficiency of the amplifier is

Question 9

Two-wattmeter method is employed to measure power in a 3-phasee balanced system with the current coils connected in the A and C lines. The phase sequence is ABC.

If the wattmeter with its current coil in A-phase line reads zero, then the power factor of the 3-phase load will be

Question 10

The annual working cost of a power plant is represented by the formula Rs. (a + b kW + c kWh) where the various terms have their usual meaning. The value of a is maximum for

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ESE & GATE EE General

Jul 1ESE & GATE EE