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Electronics and Communication Engineering - Electronic Devices and Circuits

Exercise : Electronic Devices and Circuits - Section 2
11.
LVDT is a
pressure transducer
displacement transducer
velocity transducer
acceleration transducer
Answer: Option
Explanation:

It is used to measure displacement.

12.
A 0-200 V voltmeter has an accuracy of 0.75% of full scale reading. If voltage measured is 100 V, the error is
3%
2%
1.5%
.75%
Answer: Option
Explanation:

.

13.
In Schering bridge, the potential of detector above earth potential is about
a few volts
10 kV
1000 V
either (a) or (b)
Answer: Option
Explanation:

136.

14.
The dimensions of EMF are
ML2I-1T-3
M-1T-3
ML2I-2T-3
ML3I-1T-3
Answer: Option
Explanation:

EMF = workdone/charge.

15.
Which of the following instruments has non-linear scale?
  1. Moving coil instrument
  2. Moving iron instrument
  3. Electrostatic instrument
  4. Rectifier instrument
Select the answer as per following codes
2 only
2 and 3 only
2, 3 and 1
1, 2, 3 and 4
Answer: Option
Explanation:

Moving coil and Rectifier Instruments have linear scale. Moving iron and electrostatic have non-linear scale.

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