R4RIN – MCQs, Mock Tests | Analytical instruments Analytical Instrumentation MCQ Question Set 20

Which of the following is correct for a level to force conversions?

1. Liquid at constant density distribution
2. Liquid with different density distribution
3. Level difference should be gradual
4. Liquid should be highly viscous

✅ Correct Answer: 1

Which of the following devices are used for a level to force conversion?

1. Load cell
2. Membrane
3. Diaphragm
4. Voltmeter

✅ Correct Answer: 1

Diaphragm element is used for a level to pressure conversion.

1. True
2. False
3. all of the above
4. None of the mentioned

✅ Correct Answer: 1

In closed container type level measuring system, pressure at top of container is due to ______

1. Vacuum pressure
2. Vapor pressure
3. Liquid pressure
4. Atmospheric pressure

✅ Correct Answer: 2

What will happen if the float becomes lighter?

1. Density variations becomes more important
2. Density variations becomes less important
3. System becomes less efficient
4. None of the mentioned

✅ Correct Answer: 2

Which of the following represents correct relation for pressure in manometer type level measuring system?

1. (ϱmhm – ϱy)g
2. (ϱm – ϱy)g
3. (ϱmhm – ϱ)g
4. ϱmhm – ϱy

✅ Correct Answer: 1

Which of the following represents the slow motion of layers of fluid in one direction?

1. Laminar flow
2. Turbulent flow
3. Viscous flow
4. Both laminar and viscous flow

✅ Correct Answer: 4

If shear stress is equal proportional to velocity gradient, fluid is called as _________

1. Newtonian fluid
2. Viscous fluid
3. Laminar fluid
4. None of the mentioned

✅ Correct Answer: 1

Which of the following represents newton’s equation for viscosity?

1. τ = µ(dv/dt)
2. µ = τ(dv/dt)
3. τ = dv/dt
4. τ = µ2(dv/dt)

✅ Correct Answer: 1

Which of the following represents relation for kinematic viscosity?

1. Absolute density/mass density
2. Absolute density × mass density
3. Absolute density × (mass density)2
4. Absolute density/(mass density)2

✅ Correct Answer: 1

Which of the following represents Newtonian fluids?

1. Lubricating oils
2. Honey
3. Rubber suspension
4. Synthetic oils

✅ Correct Answer: 1

What happens to the viscosity of liquid and gas when the temperature is increased?

1. Both increases
2. Both decreases
3. For liquid increases and for gas decreases
4. For liquid decreases and gas increases

✅ Correct Answer: 4

Orifice type viscometer covert viscosity to _______

1. Force
2. Pressure
3. Displacement
4. Potential difference

✅ Correct Answer: 2

Which of the following is not converting viscosity to pressure?

1. Redwood viscometer
2. Saybolt viscometer
3. Orifice viscometer
4. Rotameter viscometer

✅ Correct Answer: 4

Rotameter type viscometer converts viscosity to angular displacement.

1. True
2. False
3. all of the above
4. None of the mentioned

✅ Correct Answer: 2

Which of the following represents Hagen-poissule equation?

1. µ = (πd4ΔP)/(128Q’L)
2. µ = (d4ΔP)/(128Q’L)
3. µ = (πd4ΔP)/(Q’L)
4. µ = (πd4)/(128Q’L)

✅ Correct Answer: 1

In ______ velocity of fluid is constant on every point at a specific time.

1. Steady flow
2. Rotational flow
3. Non steady flow
4. None of the mentioned

✅ Correct Answer: 1

If all particle of fluid has a path parallel to the wall, it is known as _______

1. Stream line flow
2. Laminar flow
3. Viscous flow
4. All of the mentioned

✅ Correct Answer: 4

Which of the following represents Reynolds number for laminar flow?

1. Less than 2000
2. Greater than 4000
3. Infinite
4. None of the mentioned

✅ Correct Answer: 1

Bernoulli’s theorem is applicable for fluid path with moderate frictional force.

1. True
2. False
3. all of the above
4. None of the mentioned

✅ Correct Answer: 1

________ measures velocity at a point of fluid in a stream.

1. Venturi meter
2. pH meter
3. Pitot-Static tubes
4. None of the mentioned

✅ Correct Answer: 3

Which of the following represents obstruction type flow measuring systems?

1. Centrifugal force type
2. Rotating vane system
3. Flow nozzle device
4. None of the mentioned

✅ Correct Answer: 3

Static vane system causes pressure loss in flow.

1. True
2. False
3. all of the above
4. None of the mentioned

✅ Correct Answer: 1

Which of the following represents the correct relation between flow rate and area of pipe?

1. Direct proportionality
2. Inverse proportionality
3. Equal
4. None of the mentioned

✅ Correct Answer: 1

Which of the following converts flow to rotational motion?

1. Rotatic vane system
2. Rotameter flow system
3. Both rotameter flow system and rotatic vane system
4. None of the mentioned

✅ Correct Answer: 1

Centrifugal force elements are used for ________

1. High flow rate
2. Low flow rate
3. All range of flow rate
4. None of the mentioned

✅ Correct Answer: 1

Which of the following uses displacement to pressure conversion?

1. Flapper nozzle system
2. Gyroscope
3. Viscometer
4. None of the mentioned

✅ Correct Answer: 1

Displacement to pressure systems are used for measuring _______

1. Displacement
2. Velocity
3. Acceleration
4. Force

✅ Correct Answer: 1

Which of the following represents the correct relation between pressure and displacement in flapper nozzle system?

1. Direct proportionality
2. Inverse proportionality
3. Equal
4. None of the mentioned

✅ Correct Answer: 2

Which of the following represents normal value for Pout/Pin?

1. Less than 0.2
2. Between 0.2 and 0.75
3. Between 0.75 and 1
4. Greater than 1

✅ Correct Answer: 3

Which of the following is correct for flapper nozzle system?

1. Used in hydraulic system only
2. Used in pneumatic system only
3. Used in both hydraulic and pneumatic system
4. None of the mentioned

✅ Correct Answer: 3

Range of displacement of flapper required to change output pressure over the useful range is known as _____

1. Cut-off displacement
2. Throttling range
3. Threshold value
4. Break value

✅ Correct Answer: 2

Which of the condition is applicable for flapper nozzle system?

1. Measuring air should be free from dust
2. Measuring air must be of constant pressure
3. Measuring air should be of free from dust and of constant pressure
4. None of the mentioned

✅ Correct Answer: 3

Which of the following represents condition for a volume of chamber?

1. As large as possible
2. Limited to 5 cc
3. AS small as possible
4. No limit

✅ Correct Answer: 2

Which of the following represents ideal flapper nozzle system?

1. Ratio of output and input pressure 0.75 at displacement = 0
2. Ratio of output and input pressure 1 at displacement = 0
3. Ratio of output and input pressure 0.5 at displacement = 0
4. Ratio of output and input pressure 0 at displacement = 0

✅ Correct Answer: 2

At which point of displacement pressure chara has maximum slope?

1. 0.14(di/dt)2
2. (di/dt)
3. 0.5(di/dt)2
4. None of the mentioned

✅ Correct Answer: 1

Seismic transducers are used to measure _______

1. Displacement
2. Velocity
3. Acceleration
4. All of the mentioned

✅ Correct Answer: 4

Seismic mass has freedom to move any direction.

1. True
2. False
3. all of the above
4. None of the mentioned

✅ Correct Answer: 2

Relative displacement between housing frame and seismic mass in seismic transducer will be ______

1. Xi(t)-Xm(t)
2. Xi(t)+Xm(t)
3. 2Xi(t)
4. 2Xm(t)

✅ Correct Answer: 1

Which of the following represents the application of spring?

1. To provide stability
2. To provide oscillatory motion
3. To provide restoring force
4. None of the mentioned

✅ Correct Answer: 3

Damper system is used to ________

1. Produce oscillations
2. Limit oscillations
3. To produce displacement
4. For indication

✅ Correct Answer: 2

Which of the following represents the correct relation for undamped natural frequency of system?

1. KM
2. (KM)1/2
3. K/M
4. (K/M)1/2

✅ Correct Answer: 4

Seismic transducer is only applicable for displacement measurement.

1. True
2. False
3. all of the above
4. None of the mentioned

✅ Correct Answer: 2

Which of the following spring-mass arrangement is used for displacement measurement?

1. Soft spring small mass
2. Soft spring large mass
3. Stiff spring small mass
4. Stiff spring large mass

✅ Correct Answer: 2

How bandwidth can be increased?

1. Lowering natural frequency
2. Increasing natural frequency
3. Doubling natural frequency
4. Bandwidth cannot be increased

✅ Correct Answer: 2

Seismic displacement transducers are not suitable for measuring ______

1. Vibrating velocities
2. Static velocities
3. Dynamic velocities
4. None of the mentioned

✅ Correct Answer: 1

Axis of rotation of wheel in gyroscope is called ________

1. Spin axis
2. Vertical axis
3. Vertical axis
4. Angular axis

✅ Correct Answer: 1

Gymbels are used for _________

1. Improving rotational speed
2. Supporting gyro wheel
3. As damping agent
4. None of the mentioned

✅ Correct Answer: 2

Which of the following represents angular momentum of gyro wheel?

1. jsΩs
2. js
3. js/Ωs
4. None of the mentioned

✅ Correct Answer: 1

Turning of the rotor about a third axis when a torque transverse to spin axis is known as _______

1. Transverse shear
2. Transverse stress
3. Precession
4. Face shear

✅ Correct Answer: 3

Increase in angular momentum decreases error.

1. True
2. False
3. all of the above
4. None of the mentioned

✅ Correct Answer: 2

Which of the following represents condition for ideal gyroscope?

1. Infinite drift of spin axis
2. Infinite speed for gyro meter
3. Very low drift of spin axis
4. None of the mentioned

✅ Correct Answer: 3

Which of the following represents characteristic of a rate gyro?

1. More sensitive
2. Soft spring of lower value for K
3. High angular momentum
4. All of the mentioned

✅ Correct Answer: 4

Which of the following represents integrating type gyroscope?

1. Zero order system
2. First order system
3. Second order system
4. Third order system

✅ Correct Answer: 2

Integrating type gyroscope has high sensitivity due to ______

1. High Hs
2. Lower damping coefficient
3. Both high Ha and lower damping coefficient
4. None of the mentioned

✅ Correct Answer: 3

Rate gyroscope is a _______

1. Zero order system
2. First order system
3. Second order system
4. Third order system

✅ Correct Answer: 3

Resistive transducers are _______

1. Primary transducers
2. Secondary transducers
3. Either primary or secondary
4. None of the mentioned

✅ Correct Answer: 3

What will happen to resistance, if the length of the conductor is increased?

1. Decreases
2. No change
3. Increases
4. Doubles

✅ Correct Answer: 3

Which of the following can be measured using change in resistivity?

1. Temperature
2. Visible radiation
3. Moisture content
4. All of the mentioned

✅ Correct Answer: 4

What will happen for resistivity metal and semiconductor if the temperature is increased?

1. Increases
2. Decreases
3. For metal increases and for semiconductor decreases
4. For metal decreases and for semiconductor increases

✅ Correct Answer: 3