Electrical Measurement and Measuring Instruments (3160915) MCQs

MCQs of Transducers and Sensors

Showing 51 to 60 out of 85 Questions
3 4 5 6 7 8
51.

In a temperature sensing element ________

(a)

low value of α is required
(b)

 infinite value of α is required
(c)

α must be zero
(d)

high value of α is required
Answer:

Option (d)

52.

 Thermistor is a contraction _________

(a)

thermal resistor
(b)

laser resistor
(c)

electric resistor
(d)

mechanical resistor
Answer:

Option (a)

53.

Thermistors have ________

(a)

positive temperature coefficient
(b)

negative temperature coefficient
(c)

zero temperature coefficient
(d)

infinite temperature coefficient
Answer:

Option (b)

54.

Thermistors ________

(a)

sense large changes in temperature
(b)

cannot sense any change in temperature
(c)

sense small changes in temperature
(d)

have a positive temperature coefficient of resistance
Answer:

Option (c)

55.

Thermistor has a resistance of ________

(a)

250 ῼ to 500 kῼ
(b)

50 ῼ to 10 kῼ
(c)

1 ῼ to 1 kῼ
(d)

100 ῼ to 100 kῼ
Answer:

Option (d)

56.

Change in resistance is measured using a ________

(a)

Anderson’s bridge
(b)

Wheatstone’s bridge
(c)

Hay’s bridge
(d)

Maxwell’s bridge
Answer:

Option (b)

57.

Thermistor follows which law for small variations ________

(a)

Charle’s law
(b)

KVL
(c)

KCL
(d)

Ohm’s law
Answer:

Option (d)

58.

At small values of voltage, a thermistor ________

(a)

reaches peak current slowly
(b)

reaches peak current immediately
(c)

does not reaches peak current
(d)

reaches peak current intermediately
Answer:

Option (a)

59.

Pressure measurement devices make use of ________

(a)

non-elastic member
(b)

elastic member
(c)

bendable member
(d)

non-bendable member
Answer:

Option (b)

60.

Diaphragms in a pressure sensor are of ________

(a)

2 types
(b)

5 types
(c)

10 types
(d)

20 types
Answer:

Option (a)

Showing 51 to 60 out of 85 Questions
3 4 5 6 7 8