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Electronics and Communication Engineering - Measurements and Instrumentation

Exercise : Measurements and Instrumentation - Section 5
41.
A generated voltage is equally dependent on three resistances R1, R2, R3 and its value is V = (R1R2)/R3. If tolerance of each resistor is 0.1%, the maximum error in voltage is
0.3%
± 0.3%
0.1%
± 0.1%
Answer: Option
Explanation:

The tolerances are additive.

42.

Assertion (A): A thermocouple transducer is based on Seeback effect.

Reason (R): In a thermocouple transducer used for temperature measurement, the cold junction is usually kept in ice bath.

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.
43.
In an Anderson bridge the unknown inductance is measured in terms of
known inductance and resistance
known inductance
known capacitance and resistance
known capacitance
Answer: Option
Explanation:
No answer description is available. Let's discuss.
44.
In a Ballistic galvanometer
inertia is small and damping is also small
inertia is large and damping is critical
inertia is large and damping is small
both inertia and damping are large
Answer: Option
Explanation:
No answer description is available. Let's discuss.
45.
Which instrument needs creep compensation?
Dynamometer wattmeter
Induction wattmeter
Energy meter
Both (b) and (c)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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