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Analytical Instrumentation MCQ Question Set 20
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Analytical Instrumentation MCQ Question Set 20
1
Which of the following is correct for a level to force conversions?
A
Liquid at constant density distribution
B
Liquid with different density distribution
C
Level difference should be gradual
D
Liquid should be highly viscous
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✅ Correct Answer: 1
2
Which of the following devices are used for a level to force conversion?
A
Load cell
B
Membrane
C
Diaphragm
D
Voltmeter
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✅ Correct Answer: 1
3
Diaphragm element is used for a level to pressure conversion.
A
True
B
False
C
all of the above
D
None of the mentioned
Show Answer
✅ Correct Answer: 1
4
In closed container type level measuring system, pressure at top of container is due to ______
A
Vacuum pressure
B
Vapor pressure
C
Liquid pressure
D
Atmospheric pressure
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✅ Correct Answer: 2
5
What will happen if the float becomes lighter?
A
Density variations becomes more important
B
Density variations becomes less important
C
System becomes less efficient
D
None of the mentioned
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✅ Correct Answer: 2
6
Which of the following represents correct relation for pressure in manometer type level measuring system?
A
(ϱmhm – ϱy)g
B
(ϱm – ϱy)g
C
(ϱmhm – ϱ)g
D
ϱmhm – ϱy
Show Answer
✅ Correct Answer: 1
7
Which of the following represents the slow motion of layers of fluid in one direction?
A
Laminar flow
B
Turbulent flow
C
Viscous flow
D
Both laminar and viscous flow
Show Answer
✅ Correct Answer: 4
8
If shear stress is equal proportional to velocity gradient, fluid is called as _________
A
Newtonian fluid
B
Viscous fluid
C
Laminar fluid
D
None of the mentioned
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✅ Correct Answer: 1
9
Which of the following represents newton’s equation for viscosity?
A
τ = µ(dv/dt)
B
µ = τ(dv/dt)
C
Ï„ = dv/dt
D
τ = µ2(dv/dt)
Show Answer
✅ Correct Answer: 1
10
Which of the following represents relation for kinematic viscosity?
A
Absolute density/mass density
B
Absolute density × mass density
C
Absolute density × (mass density)2
D
Absolute density/(mass density)2
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✅ Correct Answer: 1
11
Which of the following represents Newtonian fluids?
A
Lubricating oils
B
Honey
C
Rubber suspension
D
Synthetic oils
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✅ Correct Answer: 1
12
What happens to the viscosity of liquid and gas when the temperature is increased?
A
Both increases
B
Both decreases
C
For liquid increases and for gas decreases
D
For liquid decreases and gas increases
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✅ Correct Answer: 4
13
Orifice type viscometer covert viscosity to _______
A
Force
B
Pressure
C
Displacement
D
Potential difference
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✅ Correct Answer: 2
14
Which of the following is not converting viscosity to pressure?
A
Redwood viscometer
B
Saybolt viscometer
C
Orifice viscometer
D
Rotameter viscometer
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✅ Correct Answer: 4
15
Rotameter type viscometer converts viscosity to angular displacement.
A
True
B
False
C
all of the above
D
None of the mentioned
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✅ Correct Answer: 2
16
Which of the following represents Hagen-poissule equation?
A
µ = (πd4ΔP)/(128Q’L)
B
µ = (d4ΔP)/(128Q’L)
C
µ = (πd4ΔP)/(Q’L)
D
µ = (πd4)/(128Q’L)
Show Answer
✅ Correct Answer: 1
17
In ______ velocity of fluid is constant on every point at a specific time.
A
Steady flow
B
Rotational flow
C
Non steady flow
D
None of the mentioned
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✅ Correct Answer: 1
18
If all particle of fluid has a path parallel to the wall, it is known as _______
A
Stream line flow
B
Laminar flow
C
Viscous flow
D
All of the mentioned
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✅ Correct Answer: 4
19
Which of the following represents Reynolds number for laminar flow?
A
Less than 2000
B
Greater than 4000
C
Infinite
D
None of the mentioned
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✅ Correct Answer: 1
20
Bernoulli’s theorem is applicable for fluid path with moderate frictional force.
A
True
B
False
C
all of the above
D
None of the mentioned
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✅ Correct Answer: 1
21
________ measures velocity at a point of fluid in a stream.
A
Venturi meter
B
pH meter
C
Pitot-Static tubes
D
None of the mentioned
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✅ Correct Answer: 3
22
Which of the following represents obstruction type flow measuring systems?
A
Centrifugal force type
B
Rotating vane system
C
Flow nozzle device
D
None of the mentioned
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✅ Correct Answer: 3
23
Static vane system causes pressure loss in flow.
A
True
B
False
C
all of the above
D
None of the mentioned
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✅ Correct Answer: 1
24
Which of the following represents the correct relation between flow rate and area of pipe?
A
Direct proportionality
B
Inverse proportionality
C
Equal
D
None of the mentioned
Show Answer
✅ Correct Answer: 1
25
Which of the following converts flow to rotational motion?
A
Rotatic vane system
B
Rotameter flow system
C
Both rotameter flow system and rotatic vane system
D
None of the mentioned
Show Answer
✅ Correct Answer: 1
26
Centrifugal force elements are used for ________
A
High flow rate
B
Low flow rate
C
All range of flow rate
D
None of the mentioned
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✅ Correct Answer: 1
27
Which of the following uses displacement to pressure conversion?
A
Flapper nozzle system
B
Gyroscope
C
Viscometer
D
None of the mentioned
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✅ Correct Answer: 1
28
Displacement to pressure systems are used for measuring _______
A
Displacement
B
Velocity
C
Acceleration
D
Force
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✅ Correct Answer: 1
29
Which of the following represents the correct relation between pressure and displacement in flapper nozzle system?
A
Direct proportionality
B
Inverse proportionality
C
Equal
D
None of the mentioned
Show Answer
✅ Correct Answer: 2
30
Which of the following represents normal value for Pout/Pin?
A
Less than 0.2
B
Between 0.2 and 0.75
C
Between 0.75 and 1
D
Greater than 1
Show Answer
✅ Correct Answer: 3
31
Which of the following is correct for flapper nozzle system?
A
Used in hydraulic system only
B
Used in pneumatic system only
C
Used in both hydraulic and pneumatic system
D
None of the mentioned
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✅ Correct Answer: 3
32
Range of displacement of flapper required to change output pressure over the useful range is known as _____
A
Cut-off displacement
B
Throttling range
C
Threshold value
D
Break value
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✅ Correct Answer: 2
33
Which of the condition is applicable for flapper nozzle system?
A
Measuring air should be free from dust
B
Measuring air must be of constant pressure
C
Measuring air should be of free from dust and of constant pressure
D
None of the mentioned
Show Answer
✅ Correct Answer: 3
34
Which of the following represents condition for a volume of chamber?
A
As large as possible
B
Limited to 5 cc
C
AS small as possible
D
No limit
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✅ Correct Answer: 2
35
Which of the following represents ideal flapper nozzle system?
A
Ratio of output and input pressure 0.75 at displacement = 0
B
Ratio of output and input pressure 1 at displacement = 0
C
Ratio of output and input pressure 0.5 at displacement = 0
D
Ratio of output and input pressure 0 at displacement = 0
Show Answer
✅ Correct Answer: 2
36
At which point of displacement pressure chara has maximum slope?
A
0.14(di/dt)2
B
(di/dt)
C
0.5(di/dt)2
D
None of the mentioned
Show Answer
✅ Correct Answer: 1
37
Seismic transducers are used to measure _______
A
Displacement
B
Velocity
C
Acceleration
D
All of the mentioned
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✅ Correct Answer: 4
38
Seismic mass has freedom to move any direction.
A
True
B
False
C
all of the above
D
None of the mentioned
Show Answer
✅ Correct Answer: 2
39
Relative displacement between housing frame and seismic mass in seismic transducer will be ______
A
Xi(t)-Xm(t)
B
Xi(t)+Xm(t)
C
2Xi(t)
D
2Xm(t)
Show Answer
✅ Correct Answer: 1
40
Which of the following represents the application of spring?
A
To provide stability
B
To provide oscillatory motion
C
To provide restoring force
D
None of the mentioned
Show Answer
✅ Correct Answer: 3
41
Damper system is used to ________
A
Produce oscillations
B
Limit oscillations
C
To produce displacement
D
For indication
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✅ Correct Answer: 2
42
Which of the following represents the correct relation for undamped natural frequency of system?
A
KM
B
(KM)1/2
C
K/M
D
(K/M)1/2
Show Answer
✅ Correct Answer: 4
43
Seismic transducer is only applicable for displacement measurement.
A
True
B
False
C
all of the above
D
None of the mentioned
Show Answer
✅ Correct Answer: 2
44
Which of the following spring-mass arrangement is used for displacement measurement?
A
Soft spring small mass
B
Soft spring large mass
C
Stiff spring small mass
D
Stiff spring large mass
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✅ Correct Answer: 2
45
How bandwidth can be increased?
A
Lowering natural frequency
B
Increasing natural frequency
C
Doubling natural frequency
D
Bandwidth cannot be increased
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✅ Correct Answer: 2
46
Seismic displacement transducers are not suitable for measuring ______
A
Vibrating velocities
B
Static velocities
C
Dynamic velocities
D
None of the mentioned
Show Answer
✅ Correct Answer: 1
47
Axis of rotation of wheel in gyroscope is called ________
A
Spin axis
B
Vertical axis
C
Vertical axis
D
Angular axis
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✅ Correct Answer: 1
48
Gymbels are used for _________
A
Improving rotational speed
B
Supporting gyro wheel
C
As damping agent
D
None of the mentioned
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✅ Correct Answer: 2
49
Which of the following represents angular momentum of gyro wheel?
A
jsΩs
B
js
C
js/Ωs
D
None of the mentioned
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✅ Correct Answer: 1
50
Turning of the rotor about a third axis when a torque transverse to spin axis is known as _______
A
Transverse shear
B
Transverse stress
C
Precession
D
Face shear
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✅ Correct Answer: 3
51
Increase in angular momentum decreases error.
A
True
B
False
C
all of the above
D
None of the mentioned
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✅ Correct Answer: 2
52
Which of the following represents condition for ideal gyroscope?
A
Infinite drift of spin axis
B
Infinite speed for gyro meter
C
Very low drift of spin axis
D
None of the mentioned
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✅ Correct Answer: 3
53
Which of the following represents characteristic of a rate gyro?
A
More sensitive
B
Soft spring of lower value for K
C
High angular momentum
D
All of the mentioned
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✅ Correct Answer: 4
54
Which of the following represents integrating type gyroscope?
A
Zero order system
B
First order system
C
Second order system
D
Third order system
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✅ Correct Answer: 2
55
Integrating type gyroscope has high sensitivity due to ______
A
High Hs
B
Lower damping coefficient
C
Both high Ha and lower damping coefficient
D
None of the mentioned
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✅ Correct Answer: 3
56
Rate gyroscope is a _______
A
Zero order system
B
First order system
C
Second order system
D
Third order system
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✅ Correct Answer: 3
57
Resistive transducers are _______
A
Primary transducers
B
Secondary transducers
C
Either primary or secondary
D
None of the mentioned
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✅ Correct Answer: 3
58
What will happen to resistance, if the length of the conductor is increased?
A
Decreases
B
No change
C
Increases
D
Doubles
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✅ Correct Answer: 3
59
Which of the following can be measured using change in resistivity?
A
Temperature
B
Visible radiation
C
Moisture content
D
All of the mentioned
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✅ Correct Answer: 4
60
What will happen for resistivity metal and semiconductor if the temperature is increased?
A
Increases
B
Decreases
C
For metal increases and for semiconductor decreases
D
For metal decreases and for semiconductor increases
Show Answer
✅ Correct Answer: 3
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