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Electronics and Communication Engineering - Measurements and Instrumentation

Exercise : Measurements and Instrumentation - Section 7
26.
The difference between measured value and true value is called
gross error
relative error
probable error
absolute error
Answer: Option
Explanation:
No answer description is available. Let's discuss.
27.
In air friction damping
the air pressure opposes the motion of piston when it is moving inwards
the air pressure opposes the motion of piston when it is moving outwards
the air pressure opposes the motion of piston both when it is moving inwards as well as outwards
the air pressure may oppose or aid the motion of piston depending on the design
Answer: Option
Explanation:
No answer description is available. Let's discuss.
28.
In indicating instruments the controlling torque is provided by a spring.
True
False
Answer: Option
Explanation:
No answer description is available. Let's discuss.
29.
For measuring a very high resistance we should use
Kelvin's double bridge
Wheatstone bridge
Meggar
Either (a) or (c)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
30.

Assertion (A): Damping in a vibration galvanometer is small.

Reason (R): Vibration galvanometer is a PMMC instrument.

Both A and R are true and R is correct explanation of A
Both A and R are true but R is not correct explanation of A
A is true R is false
A is false R is true
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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