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UGC-NET 2017: Electronics Measurement and Instrumentation SpeedTest Quiz-20

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Question 1

The pointer of an indicating instrument is generally made of ……………………….

Question 2

When the pointer of an indicating instrument is in the final deflected position ……………………

Question 3

The series ohmmeter shown in Fig. is made up of a 3 V battery, a 100μA meter and a resistance r which has a fixed value of 30-kΩ What is the value of unknown resistance R, when the pointer indicates half full-scale deflection?

Question 4

In the circuit shown in Figure.

What is the voltage across R₂ with voltmeter connected in the circuit?

Question 5

A moving coil galvanometer has a sensitivity of 60 divisions/amp. When a shunt is used, its sensitivity becomes 10 div/amp. What is the value of the shunt used if the resistance of the galvanometer is

Question 6

In Fig., the resistances of the two coils of wattmeter are

and

respectively and both are non-inductive. The load is taking a current of 20 A at 200 V and 0.8 p.f. lagging.

What is the percentage error in the reading of the wattmeter?

Question 7

A current

A is passed through an ideal moving iron type ammeter. Its reading will be

Question 8

An energy meter having a meter constant of 1200 rev. per kWh is found to make 5 revolutions in 75 seconds. The load power is

Question 9

rise of temperature is observed in a conductor by passing a certain amount of current. If current through the conductor is doubled, the rise of temperature will be

Question 10

A uniform wire when connected directly across a 200 V line produces heat H per second. If the wire is divided into n equal parts and all the parts are connected in parallel across 200 V line, the heat produced per second is

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ESE & GATE EC Electrical & Electronics Measurements

Dec 2ESE & GATE EC