Electrical Measurement and Measuring Instruments (3160915) MCQs

MCQs of Measurement of R, L and C

Showing 31 to 40 out of 51 Questions
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31.

The opposite two ends of a Wheatstone bridge consist of _________

(a)

voltage and current source
(b)

e.m.f and null detector
(c)

resistance and capacitance
(d)

inductance and impedance
Answer:

Option (b)

32.

Wheatstone bridge works on the principle of ________

(a)

full deflection
(b)

 partial deflection
(c)

no deflection
(d)

null deflection
Answer:

Option (d)

33.

When the bridge is balanced, what is the current flowing through the galvanometer?

(a)

0
(b)

depends on the ratio arms R1 and R2
(c)

varies by a factor of 2
(d)

depends on the type of null detector used
Answer:

Option (a)

34.

Amount of deflection of the galvanometer depends on _________

(a)

resistance of the ratio arms
(b)

sensitivity
(c)

current flowing through the bridge
(d)

emf across the circuit
Answer:

Option (b)

35.

Wheatstone bridge is a __________

(a)

a.c. bridge
(b)

d.c. bridge
(c)

high voltage bridge
(d)

power dissipation bridge
Answer:

Option (b)

36.

Low resistance refers to _________

(a)

resistances of the order of 1ῼ
(b)

resistances of the order of 1kῼ
(c)

resistances of the order of 1mῼ
(d)

resistances of the order of 1Mῼ
Answer:

Option (a)

37.

What is the significance of measuring low resistances?

(a)

voltage drop across the circuit is high
(b)

contact and lead resistances are appreciable
(c)

there is no power loss
(d)

no current flows through the bridge circuit
Answer:

Option (b)

38.

Which is the most popular method for measuring low resistance?

(a)

ammeter-voltmeter method
(b)

potentiometer method
(c)

kelvin double bridge method
(d)

ducter ohmmeter method
Answer:

Option (c)

39.

Kelvin’s bridge consists of _________

(a)

double bridge
(b)

 single bridge
(c)

half bridge
(d)

three fourth bridge
Answer:

Option (a)

40.

The range of resistance measured in a Kelvin bridge is _________

(a)

10Ω to 10 mΩ
(b)

1Ω to 10 μΩ
(c)

0.01Ω to 10 MΩ
(d)

0.1Ω to 10 nΩ
Answer:

Option (b)

Showing 31 to 40 out of 51 Questions
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