222 + Mcqs in General Page 2 McqOptions

51.	Which of the following transducers is preferred for measurements involving sound
A.	thermocouple
B.	Kundt's tube
C.	peizoelectric pick up
D.	None of the above
E.	Any of the above
Answer» D. None of the above

Discussion

52.	Thermistors have
A.	Zero temperature coefficient
B.	Low and positive temperature coefficient
C.	14
D.	High and negative temperature coefficient
E.	Low and negative temperature coefficient
Answer» E. Low and negative temperature coefficient

Discussion

53.	Platinum is used in resistance thermometers because of
A.	Low cost
B.	Low cost and high stability
C.	Low cost, high stability and wide operating range
D.	None of the above
E.	14
Answer» D. None of the above

Discussion

54.	Which of the following standard can be used for defining length?
A.	Bar standard
B.	End standard
C.	Light wave standard
D.	Any of the above
E.	None of the above
Answer» E. None of the above

Discussion

55.	Bolometers are used for measurement of
A.	Thermal radiations
B.	Electromagnetic, radiations
C.	Manetic hysteresis loop area
D.	Intensity of light
E.	All of the above
Answer» B. Electromagnetic, radiations

Discussion

56.	Contraction or expansion due to changes in temperature can be measured by
A.	Tellurometer
B.	Dilatometer
C.	Thermocouple
D.	Fathometer
E.	Optical pyrometer
Answer» C. Thermocouple

Discussion

57.	Freeqing point of mercury is
A.	? 98.87?C
B.	? 48.80?C
C.	? 38.87?C
D.	None of the above
E.	Any of the above
Answer» D. None of the above

Discussion

58.	A degital thermometer has 3
A.	1.000?C
B.	1.001?C
C.	1.999?C
D.	0.999?C
E.	None of the above
Answer» D. 0.999?C

Discussion

59.	A geodimeter is used for the measurements of
A.	Distances
B.	Volumes
C.	Angles
D.	Bearings of a point
E.	Areas
Answer» B. Volumes

Discussion

60.	Which of the following magnetic material has highest coercive force?
A.	Tungsten steel
B.	Dead mild steel
C.	Alcomax
D.	Carbon steel
E.	Cobalt steel
Answer» D. Carbon steel

Discussion

61.	The flow of non-conducting medium cannot be measured by
A.	Orifice
B.	Rotameter
C.	Electro magnetic meter
D.	Turbine meter
E.	All of the above
Answer» D. Turbine meter

Discussion

62.	Under force-current analogy, mass is considered analogous to
A.	Reciprocal of resistance
B.	Reciprocal of capacitance
C.	Resistance
D.	Current
E.	Capacitance
Answer» F.

Discussion

63.	A transducer that converts the input physical phenomenon into an electrical output in the form of pulses is known as
A.	Secondary transducer
B.	Analogy transducer
C.	Digital transducer
D.	Tuned transistor
E.	None of the above
Answer» D. Tuned transistor

Discussion

64.	In a load cell, strain gauge acts as a
A.	Protective device
B.	Comparator
C.	Primary transducer
D.	Secondary transducer
E.	None of the above
Answer» E. None of the above

Discussion

65.	The least count of a vernier caliper used in industries is generally
A.	0.001 mm
B.	1 mm
C.	0.02 mm
D.	None of the above
E.	None of the above
Answer» D. None of the above

Discussion

66.	A strain gauge material should have low
A.	Gauge factor
B.	Sensitivity
C.	Resistance temperature coefficient
D.	All of the above
E.	100 to 5000
Answer» D. All of the above

Discussion

67.	Metres A and B require 50 mA and mA respectively to give full scale deflection. It can be concluded that
A.	A is more sensitive as compared to B
B.	B is more sensitive as compared to B
C.	A has wider range than B
D.	B has better damping as compared to A
E.	None of the above
Answer» C. A has wider range than B

Discussion

68.	Which of the following is not an elecment of electro-pneumatic pressure transmitter?
A.	LVDT
B.	Bellows
C.	Opamp
D.	Flapper nozzle mechanism
E.	All of the above
Answer» E. All of the above

Discussion

69.	Although semi-conductor strain gauges have high gauge factor still these are not preferred due to
A.	Difficulties in connections and high cost of auxiliary equipment
B.	Small size and high cost
C.	Small size and high cost
D.	Non-linearity
E.	Non-linearity and sensitivity to temperature fluctuations
Answer» F.

Discussion

70.	Under force-voltage analogy, velocity is considered as analogous to
A.	Resistance
B.	Charge
C.	Current
D.	Magnetic flux
E.	Inductance
Answer» D. Magnetic flux

Discussion

71.	The gauge factor for doped crystal is in the range
A.	100 to 5000
B.	2 to 20
C.	1 to 2
D.	0.5 to 1
E.	20 to 50
Answer» B. 2 to 20

Discussion

72.	Which of the following is an electric tachometer?
A.	Stroboscopic tachometer
B.	Eddy current tachometer
C.	Drag type tachometer
D.	Ignition type tachometer
E.	All of the above
Answer» F.

Discussion

73.	A strain gage material should have low
A.	gage factor
B.	strain sensitivity
C.	resistance temperature coefficient
D.	None of the above
E.	Any of the above
Answer» D. None of the above

Discussion

74.	In case of obstruction meters used for flow measurement, pressure recovery is maximum in the case of
A.	venturi
B.	flow nozzle
C.	orifice
D.	None of the above
E.	Any of the above
Answer» B. flow nozzle

Discussion

75.	Stainless steel Bourdon tube pressure gauge joints are usually
A.	Welded
B.	Adhesive jointed
C.	Soldered
D.	Brazed
E.	Screwed
Answer» B. Adhesive jointed

Discussion

76.	Which of the following strain sensing elements has the highest value of gauge factor
A.	Advance
B.	Nichrome
C.	Manganin
D.	Soft iron
E.	Any of the above
Answer» E. Any of the above

Discussion

77.	Phosphor bronze Bourdon tube can be used of pressures upto
A.	15 kg/cm2
B.	10 kg/cm2
C.	70 kg/cm2
D.	5 kg/cm2
E.	170 kg/cm2
Answer» D. 5 kg/cm2

Discussion

78.	The statement "The most probable value of an observed quantity available from a given set of observation is the one for which the sum of the square of errors is a minimum" is known as
A.	Principle of square errors
B.	Pythogorus theorem
C.	Principle of least squares
D.	Law of square probability
E.	Law of errors
Answer» D. Law of square probability

Discussion

79.	In a car the fuel level is measured by
A.	Electronic transducer
B.	Float method
C.	Dip stick
D.	Any of the above
E.	None of the above
Answer» C. Dip stick

Discussion

80.	A hydrometer can be used to measure
A.	Specific gravity of solids
B.	Temperature coefficient of liquids
C.	Relative humidity of air
D.	Conductivity of gases
E.	Specific gravity of liquids
Answer» F.

Discussion

81.	The thickness of oil film between gage blocks is of the order of
A.	0.2 microinch
B.	0.5 microinch
C.	1 microinch
D.	None of the above
E.	Any of the above
Answer» B. 0.5 microinch

Discussion

82.	The maximum allowable limit that a measurement may vary from the true value is known as
A.	expected error
B.	permissible error
C.	Range of error
D.	None of the above
E.	Any of the above
Answer» C. Range of error

Discussion

83.	Which of the following materials has minimum temperature coefficient of resistance
A.	Constantan
B.	Isoelastic
C.	Nichrome
D.	None of the above
E.	Any of the above
Answer» B. Isoelastic

Discussion

84.	A flapper nozzle is used in
A.	Electronic controller
B.	Hydraulic Controller
C.	Pneumatic controller
D.	All of the above
E.	None of the above
Answer» D. All of the above

Discussion

85.	Invar, the least expensible steel alloys used for measuring tapes contains about 30% of
A.	Vanadium
B.	Cobalt
C.	Aluminium
D.	Copper
E.	Nickel
Answer» F.

Discussion

86.	Under force-current analogy, the reciprocal of inductance is considered analogous to
A.	Mass
B.	Spring constant
C.	Momentum
D.	Displacement
E.	Velocity
Answer» C. Momentum

Discussion

87.	Which of the following materials has macimum gaga factor
A.	Nichrome
B.	Isoelastic
C.	Karma
D.	None of the above
E.	Any of the above
Answer» C. Karma

Discussion

88.	A pirani gauge works on the principle of change of
A.	Capacitance
B.	Electrical resistivity
C.	Relative humidity
D.	Thermal conductivity of medium
E.	Conductance
Answer» E. Conductance

Discussion

89.	Nickel is the major constituent of which the following pressure gauge Bourdon tube material
A.	Alloy steel
B.	Phosphor bronze
C.	K' monel
D.	Beryllium copper
E.	Stainless steel
Answer» D. Beryllium copper

Discussion

90.	An electrometer is used for the measurement of
A.	Voltages
B.	Currents
C.	Both (A) and (B) above
D.	None of the above
E.	14
Answer» D. None of the above

Discussion

91.	For bridge circuit of strain gauge which source of power will be ideal?
A.	High frequency ac source
B.	Low frequency ac source
C.	Difficulties in connections and high cost of auxiliary equipment
D.	Low voltage of source
E.	High voltage dc source
Answer» B. Low frequency ac source

Discussion

92.	A synchro is
A.	A variable reluctance transducer
B.	A parabolic transducer
C.	An angular position transducer
D.	A synchronizing transducer
E.	Any of the above
Answer» D. A synchronizing transducer

Discussion

93.	Which of the following is an indirect pressure measuring device?
A.	Manometer
B.	Ionisation gauge
C.	Capsules
D.	Bourdon tube
E.	Flat diaphragm
Answer» C. Capsules

Discussion

94.	Flow rate of a river can be determined by
A.	Weir
B.	Orifice
C.	Venturimeter
D.	Kundt's tube
E.	Kennison nozzle
Answer» B. Orifice

Discussion

95.	Positive displacement flow meters are
A.	variable area flow meter
B.	differential pressure flow meter
C.	quantity flow meter
D.	None of the above
E.	Any of the above
Answer» D. None of the above

Discussion

96.	Which of the following device can be used to measure blow of air around an aeroplane?
A.	Rotameter
B.	Venturimeter
C.	Manometer
D.	Anemometer
E.	Orifice
Answer» E. Orifice

Discussion

97.	For measuring the temperature of a boiler furnace which one of the following is the appropriate thermometer?
A.	Optical pyrometer
B.	Bimetallic thermometer
C.	Thermocouple
D.	Resistance thermometer
E.	Any of the above
Answer» B. Bimetallic thermometer

Discussion

98.	The main advantage of a CRO is
A.	it is a voltage sensitive instrument
B.	an inertialess beam of electrons acting as a pointer
C.	a fluorescent screen acts as scale
D.	None of the above
E.	Any of the above
Answer» C. a fluorescent screen acts as scale

Discussion

99.	The degree of perfection used in instruments, the methods and the observations, is known as
A.	Error
B.	Least count
C.	Accuracy
D.	Efficiency
E.	Precision
Answer» F.

Discussion

100.	A flow measuring system with a square root extractor usually has
A.	Linear scale
B.	No-linear scale
C.	Inverse square law curve
D.	Mass flow rate scale
E.	None of the above
Answer» B. No-linear scale

Discussion

Explore topic-wise MCQs in Mechanical Measurements.

Which of the following transducers is preferred for measurements involving sound

Thermistors have

Platinum is used in resistance thermometers because of

Which of the following standard can be used for defining length?

Bolometers are used for measurement of

Contraction or expansion due to changes in temperature can be measured by

Freeqing point of mercury is

A degital thermometer has 3

A geodimeter is used for the measurements of

Which of the following magnetic material has highest coercive force?

The flow of non-conducting medium cannot be measured by

Under force-current analogy, mass is considered analogous to

A transducer that converts the input physical phenomenon into an electrical output in the form of pulses is known as

In a load cell, strain gauge acts as a

The least count of a vernier caliper used in industries is generally

A strain gauge material should have low

Metres A and B require 50 mA and mA respectively to give full scale deflection. It can be concluded that

Which of the following is not an elecment of electro-pneumatic pressure transmitter?

Although semi-conductor strain gauges have high gauge factor still these are not preferred due to

Under force-voltage analogy, velocity is considered as analogous to

The gauge factor for doped crystal is in the range

Which of the following is an electric tachometer?

A strain gage material should have low

In case of obstruction meters used for flow measurement, pressure recovery is maximum in the case of

Stainless steel Bourdon tube pressure gauge joints are usually

Which of the following strain sensing elements has the highest value of gauge factor

Phosphor bronze Bourdon tube can be used of pressures upto

The statement "The most probable value of an observed quantity available from a given set of observation is the one for which the sum of the square of errors is a minimum" is known as

In a car the fuel level is measured by

A hydrometer can be used to measure

The thickness of oil film between gage blocks is of the order of

The maximum allowable limit that a measurement may vary from the true value is known as

Which of the following materials has minimum temperature coefficient of resistance

A flapper nozzle is used in

Invar, the least expensible steel alloys used for measuring tapes contains about 30% of

Under force-current analogy, the reciprocal of inductance is considered analogous to

Which of the following materials has macimum gaga factor

A pirani gauge works on the principle of change of

Nickel is the major constituent of which the following pressure gauge Bourdon tube material

An electrometer is used for the measurement of

For bridge circuit of strain gauge which source of power will be ideal?

A synchro is

Which of the following is an indirect pressure measuring device?

Flow rate of a river can be determined by

Positive displacement flow meters are

Which of the following device can be used to measure blow of air around an aeroplane?

For measuring the temperature of a boiler furnace which one of the following is the appropriate thermometer?

The main advantage of a CRO is

The degree of perfection used in instruments, the methods and the observations, is known as

A flow measuring system with a square root extractor usually has