Level Measurement MCQs with answers: Following Multiple Choice Questions (MCQs) are based on “Level Measurement”. It is related to subject Instrumentation or Industrial Measurement and Applications.
This topic is mostly beneficial in the field of Instrumentation, Electronics, Electrical and Mechanical Engineering.
These MCQs will be useful in various competitive examinations, entrance examinations, oral examination (Viva voce), certifications and interviews.
MCQ on Level Measurement
Que.1 Which of the following is direct method of level measurement?
- Sight glass system
- air purge
- Ultrasonic level detector
- Radar level sensor
✔ View Answer
Option 1: Sight glass system
Que.2 In a sight glass level measurement, it is necessary that the liquid in the sight glass must be same as the liquid in the tank.
- True
- False
✔ View Answer
Option 2: False
Explanation:It is not necessary that the liquid in the sight glass be same as the liquid in the tank. Any other liquid in the sight glass can also be used.
Que.3 Which types of floats may be used in float type level indicator?
- Hollow metal spheres
- Cylindrical shaped
- Disc shaped floats
- All of the above
✔ View Answer
Option 4: All of the above
Que.4 The primary conversion takes place in float type level indicator is
- Level to pressure
- Voltage to level
- Level to displacement
- Level to force
✔ View Answer
Option 3: Level to displacement
Que.5 The most common application of float type level measurement is
- To monitor the fuel tank level in motor vehicle
- Measurement of the flow of petrol in pump
- Bernal control of LPG
- All of these
✔ View Answer
Option 3: To monitor the fuel tank level in motor vehicle
Que.6 The inductive level transducers are mainly used for measurement of level of liquids which are
- non-conductive
- conductive
- Both (1) and (2)
- viscous
✔ View Answer
Option 2: conductive
Que.7 The capacitive method of level measurement is mainly used for measurement of ____ liquids.
- non-conductive
- conductive
- Both (1) and (2)
- None of the above
✔ View Answer
Option 3: Both (1) and (2)
Que.8 Capacitive devices are used for the level measurement of
- liquid
- granular solids
- Both (1) and (2)
- None of these
✔ View Answer
Option 3: Both (1) and (2)
Que.9 In variable dielectric constant method of liquid measurement, if the liquid is non-conductive. The electrode and the tank wall form the plates of a parallel plate capacitor with ____acting as the dielectric.
- plastic insulated electrode
- insulated tank wall of metal
- the liquid in between them
- None of them
✔ View Answer
Option 3: the liquid in between them
Explanation: For variable dielectric constant methodIf the liquid is non-conductive, the electrode and the tank wall form the plates of a parallel plate capacitor with the liquid in between them acting as the dielectric.
If the liquid is conductive the rod and the liquid form the plates of the capacitor, and the insulation between them is the dielectric.
Que.10 Contact devices used for the measurement of level are
- Less reliable than non-contact devices
- More reliable than non-contact devices
- same reliable as non-contact devices
- None of the above
✔ View Answer
Option 1: Less reliable than non-contact devices
Que.11 Radar sensors can carry out level measurements in:
i. Liquids
ii. Paste-like media
iii. Powders
- Only (i) and (ii)
- Only (i) and (iii)
- All of the above
- Only (i) and (iii)
✔ View Answer
Option 3: All of the above
Que.12 Which of the following is not an advantage of Level measurement based on the radar principle?
- Highly accurate measured values.
- Ideal for dynamic process conditions.
- Less installation time.
- Measures level of liquids and solids.
✔ View Answer
Option 3: Less installation time.
Explanation:Disadvantages of Radar level sensor
Radar sensing technology requires some installation time.
The software must be installed so you can calibrate the equipment. Calibration eliminates false echoes from inside the vessel.
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