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Electronics and Communication Engineering - Measurements and Instrumentation

Exercise : Measurements and Instrumentation - Section 10
16.

Assertion (A): The speed of a shaft can be measured by using a dc tacho generator.

Reason (R): A two phase servometer can also be used as a speed transducer.

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.
17.
The circuit of figure is used to measure the value Rx. Ammeter resistance Ra = 0.1 Ω voltmeter resistance Rv = 5000 Ω. It Rx1 and Rx2, are the measured values of Rx with switch in position 1 and 2, the mean of Rx1, and Rx2, is
9.98 Ω
10 Ω
10.04 Ω
10.1 Ω
Answer: Option
Explanation:
No answer description is available. Let's discuss.
18.
A Weston frequency meter is
moving coil instrument
moving iron instrument
dynamometer instrument
induction instrument
Answer: Option
Explanation:
No answer description is available. Let's discuss.
19.
The 10 MHz in the specification of CRO means that
the sweep frequency is 10 MHz
the frequency of input signal should not be more than 10 MHz
the vertical amplifier has been designed for 10 MHz
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
20.
Rayleigh current balance is an absolute instrument.
True
False
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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