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.
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 %
Q132.
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
Q133.
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)
Q134.
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
Q135.
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
Q136.
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
Q137.
Circuit shows the method of Measurement of low resistance by Ammeter-Voltmeter method. The measured resistance Rm for the given Circuit is _________

a.

Rโ‚“ + Rแตฅ

b.

\(\frac{R_x^2}{R_x + R_v}\)

c.

\(\frac{R_v^2}{R_x + R_v}\)

d.

\(\frac{R_x R_v}{R_x + R_v}\)

Discuss
Answer: (d).\(\frac{R_x R_v}{R_x + R_v}\)
Q138.
Circuit shows the method of Measurement of low resistance by Ammeter-Voltmeter method. What is the percentage error?

a.

Zero

b.

\(\frac{R_x}{R_x + R_v} × 100\)

c.

\(โ€“ \frac{R_x}{R_x + R_v} × 100\)

d.

\(โ€“ \frac{R_v}{R_x + R_v} × 100\)

Discuss
Answer: (c).\(โ€“ \frac{R_x}{R_x + R_v} × 100\)
Q139.
A resistance R is measured using the connection shown in the below figure.

The current measured is 10 A on ranges 100A and the voltage measured is 125 V on 150 V range. The scales of the ammeter and voltmeter are uniform. The total number of scale divisions of the ammeter is 100 and that of the voltmeter is 150. The scale division can be distinguished. The constructional error of the ammeter is ± 0.3% and that of voltmeter±0.4%. The resistance of the ammeter is 0.25 โ„ฆ.
The value of R is?

a.

12.75 โ„ฆ

b.

12.0 โ„ฆ

c.

12.25 โ„ฆ

d.

12.5 โ„ฆ

Discuss
Answer: (c).12.25 โ„ฆ
Q140.
A resistance R is measured using the connection shown in the below figure.

The current measured is 10 A on ranges 100A and the voltage measured is 125 V on 150 V range. The scales of the ammeter and voltmeter are uniform. The total number of scale divisions of the ammeter is 100 and that of the voltmeter is 150. The scale division can be distinguished. The constructional error of the ammeter is ± 0.3% and that of voltmeter±0.4%. The resistance of the ammeter is 0.25 โ„ฆ.
The possible error in the measurement of R is?

a.

±0.11 โ„ฆ

b.

±0.15 โ„ฆ

c.

±0.867 โ„ฆ

d.

±0.625 โ„ฆ

Discuss
Answer: (a).±0.11 โ„ฆ
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