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SSC JE EE Score Booster Live Quiz 3 (Measurements)

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Question 1

In an energy-meter which coil carries the current proportional to supply voltage __________.

Question 2

Shunt resistance in meters are generally made of …………..

Question 3

Gauge factor of strain gauge is defined as the ratio of per unit change in the _________.

Question 4

What will happen to the operating torque of moving iron instrument, if current through the operating coil is halved?

Question 5

A 0 – 200 V voltmeter has guaranteed accuracy of 2% at full scale. Find the % error if the measured value is 144 V

Question 6

A voltmeter of resistance

is connected in series with a cell of e.m.f. 2 V and internal resistance

The percentage error in the reading of voltmeter is

Question 7

A constant current is applied between the two ends of a metallic wire of uniform area of cross-section. Some heat is developed. The heat is doubled if

Question 8

A particular ammeter having sensitivity 2.5 mm/A produce a change in deflection of the pointer by 5mm. Calculate change in input –

Question 9

If shunt of 40 Ω which is used with 1600 Ω of ammeter. What will be the multiplying power -

Question 10

In a three phase system power measured by using two wattmeter method and total power measured by both wattmeter is 50kW and power factor is 0.5 lagging. Reading of second wattmeter is –

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ESE & GATE EE Electrical & Electronic Measurements

Jul 29ESE & GATE EE