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Electronics and Communication Engineering - Measurements and Instrumentation

Exercise : Measurements and Instrumentation - Section 10
11.
Two wattmeter method for 3 phase power measurement can be used only for
balanced loads
unbalanced loads
both balanced and unbalanced loads
star connected loads
Answer: Option
Explanation:
No answer description is available. Let's discuss.
12.
A coil resonates at 1 MHz with a resonating capacitance of 72 pF. At 500 pF, resonance is obtained with a resonating capacitor of 360 pF. The self capacitance of coil is
12 pF
24 pF
30 pF
72 pF
Answer: Option
Explanation:
No answer description is available. Let's discuss.
13.
A peak responding ac voltmeter using a half wave rectifier has been calibrated to read 1 V for 1 V rms sine wave input. If input is 1 V dc the reading will be
0.707 V
0.707 or 0 V
1.414 V
1.414 or 0 V
Answer: Option
Explanation:
No answer description is available. Let's discuss.
14.
For measuring inductance with high Q, we should use
Maxwell's bridge
Maxwell Wien bridge
Hay's bridge
Either (a) or (b)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
15.
A resistance strain gauge has a resistance of about
100 Ω
25 Ω
10 Ω
1 Ω
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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