Measurement of Resistance MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Measurement of Resistance, a fundamental topic in the field of Electrical Measurement and Instrumentation. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Measurement of Resistance MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Measurement of Resistance mcq questions that explore various aspects of Measurement of Resistance problems. Each MCQ is crafted to challenge your understanding of Measurement of Resistance principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Electrical Measurement and Instrumentation tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Measurement of Resistance MCQs are your pathway to success in mastering this essential Electrical Measurement and Instrumentation topic.

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Measurement of Resistance MCQs | Page 14 of 15

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Q131.
A 35 V DC supply is connected across a resistance in series with an unknown resistance R. a voltmeter having a resistance of 1.2 kโ„ฆ is connected across 600 โ„ฆ resistance and reads 5 V. The value of the known resistance is 600 โ„ฆ. The value of resistance R will be?

a.

120 โ„ฆ

b.

400 โ„ฆ

c.

1.8 kโ„ฆ

d.

2.4 kโ„ฆ

Discuss
Answer: (d).2.4 kโ„ฆ
Q132.
A DC ammeter is rated for 15 A, 250 V. The meter constant is 14.4 A-s/rev. The meter constant at rated voltage may be expressed as __________

a.

3750 rev/kW-h

b.

3600 rev/kW-h

c.

1000 rev/kW-h

d.

960 rev/kW-h

Discuss
Answer: (c).1000 rev/kW-h
Q133.
A DC ammeter has a resistance of 0.1 โ„ฆ and its current range is 0-100 A. If the range is to be extended to 0-500 A, the meter requires which of the following shunt resistance?

a.

0.010 โ„ฆ

b.

0.011 โ„ฆ

c.

0.025 โ„ฆ

d.

1.0 โ„ฆ

Discuss
Answer: (c).0.025 โ„ฆ
Q134.
A 100 ฮผA ammeter has an internal resistance of 100 โ„ฆ. The range is to be extended to 500 ฮผA. The shunt required is of resistance __________

a.

20.0 โ„ฆ

b.

22.22 โ„ฆ

c.

25.0 โ„ฆ

d.

50.0 โ„ฆ

Discuss
Answer: (c).25.0 โ„ฆ
Q135.
Resistance is measured by the voltmeter-ammeter method employing DC excitation and a voltmeter is connected directly across the unknown resistance. If the voltmeter and ammeter readings are subject to maximum possible errors of ±2.4 % and ±1% respectively, then the magnitude of the maximum possible percentage error in the value of resistance deduced from the measurement is?

a.

1.4 %

b.

1.7 %

c.

2.4 %

d.

3.4 %

Discuss
Answer: (d).3.4 %
Q136.
A galvanometer with a full-scale current of 10 mA has a resistance of 1000 โ„ฆ. The multiplying power of a 100 โ„ฆ shunt with this galvanometer is?

a.

110

b.

100

c.

11

d.

10

Discuss
Answer: (c).11
Q137.
The simultaneous applications of signals x (t) and y (t) to the horizontal and vertical plates respectively, of an oscilloscope, produce a vertical figure of 8 displays. If P and Q are constants and x(t) = P sin (4t + 30), then y(t) is equal to _________

a.

Q sin (4t -30)

b.

Q sin (2t +15)

c.

Q sin (8t +60)

d.

Q sin (4t +30)

Discuss
Answer: (b).Q sin (2t +15)
Q138.
The below figure represents?

a.

construction of medium resistance

b.

construction of high resistance

c.

construction of high resistance

d.

construction of very low resistance

Discuss
Answer: (c).construction of high resistance
Q139.
In the below figure, the terminals aaโ€™ are used for _________

a.

measuring the current flow through the circuit

b.

measuring the power dissipation of the circuit

c.

measuring the resistance of the circuit

d.

measuring the voltage drop across the resistance

Discuss
Answer: (d).measuring the voltage drop across the resistance
Q140.
In the following figure, what is the value of I?

a.

I = Iแตฅ + Iแตฃ

b.

I = Iแตฅ โ€“ Iแตฃ

c.

I = Iแตฅ Iแตฃ

d.

I = Iแตฅ โ„ Iแตฃ

Discuss
Answer: (a).I = Iแตฅ + Iแตฃ
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