Instrumentation Transducers

Beam Balance Systems

Question 1
Marks : +2 | -2
Pass Ratio : 25%
In electromagnetic balance system, horizontality is detected by ____________
Photo electric cell
Direct vision
Galvanometer
Detector circuit
Explanation:
Photo electric cell is used for detecting horizontality in beam balance system.
Question 2
Marks : +2 | -2
Pass Ratio : 25%
Null detection can be accomplished by ______________
Photo cell
Direct measurement
Pneumatic cell
All of the mentioned
Explanation:
Null detection can be made by use of photocell, Pneumatic cell and direct measurement.
Question 3
Marks : +2 | -2
Pass Ratio : 25%
Beam balance is used for _________________
Weight comparison
Pressure comparison
Density comparison
None of the mentioned
Explanation:
Beam balance system is used for comparing two difference weights.
Question 4
Marks : +2 | -2
Pass Ratio : 25%
Null position is attained when _______________
Two weight becomes equal
One becomes double of other
One becomes zero
No null position attained
Explanation:
When two weights become equal and bar becomes horizontal it is said to be in the null position.
Question 5
Marks : +2 | -2
Pass Ratio : 25%
Which of the following application in the balance system a PMMC device used for?
Restoring balance system
Oscillatory action
Detection of horizontality
None of the mentioned
Explanation:
PMMC device is incorporated for restoring action.
Question 6
Marks : +2 | -2
Pass Ratio : 25%
In balance system gain of amplifier is _____________
Very low
Very high
Unity
Selected according to weight
Explanation:
Very high gain amplifier is used so that moments are balanced.
Question 7
Marks : +2 | -2
Pass Ratio : 25%
In a pneumatic balance system, restoring is done by ______________
PMMC device
Bellows
Amplifier
Demodulator
Explanation:
Bellow elements are introduced for providing restoring action in the pneumatic balance system.
Question 8
Marks : +2 | -2
Pass Ratio : 25%
Torque of PMMC device is proportional to _______________
Mass
Change in two masses
Balancing time
None of the mentioned
Explanation:
Change in two masses will be proportional to the torque produced by PMMC device.
Question 9
Marks : +2 | -2
Pass Ratio : 25%
In a pneumatic balance system, developed output will be __________
Pressure variation
Current signal
Potential difference
None of the mentioned
Explanation:
In a pneumatic balance system, develop output signal will be pressure variation.
Question 10
Marks : +2 | -2
Pass Ratio : 25%
PMMC system always tend to make the system distract from null position.
True
False
Explanation:
PMMC device is used for beam to restore null position.