Loss of charge method is suitable for medium resistances. True False It is suita

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Question
Loss of charge method is suitable for medium resistances.
Options
A. True
B. False

Correct Answer

False

Explanation

It is suitable for high resistances.

Measurements and Instrumentation problems

Search Results

1. A moving iron instrument gives correct reading when used at
Options
A. low frequencies
B. high frequencies
C. only one frequency
D. all frequencies upto a certain value

2. A full wave rectifier type meter is used to measure the wave shape shown in figure. The voltmeter is calibrated to read rms value of sine wave. The reading of voltmeter will be
Options
A.
B.
C. 100 V
D. 111 V

3. Consider the following statements: In a differential amplifier using JFET, the differential output offset is due to
1. mismatch between FET parameters
2. difference in values of resistances used in circuit
3. variation in supply voltage.
Of the statements, the correct statements are
Options
A. 1 and 2
B. 1, 2, 3
C. 2, 3
D. 1, 3

4. Assertion (A): A hot wire ammeter has a cramped scale.
Reason (R): The heat is proportional to square of current.
Options
A. Both A and R are true and R is correct explanation of A
B. Both A and R are true but R is not correct explanation of A
C. A is true R is false
D. A is false R is true

5. If reference sound pressure P₀ is 2 x 10^-5 N/m², a sound pressure of 90 dB is equal to
Options
A. 0.632 N/m²
B. 0.707 N/m²
C. 0.835 N/m²
D. 0.925 N/m²

6. Which of the following is true about an impulse voltage?
Options
A. It is a unidirectional voltage
B. Chopped impulse flashover does not occur
C. Time taken to rise is equal to time taken to fall
D. RMS value is always less than 50% of average value

8. In 3 phase power measurement by two wattmeter method, the reading of one wattmeter is zero. The power factor of load is
Options
A. 1
B. 0.5
C. 0
D. 0.8

9. Which power amplifier can deliver maximum load power?
Options
A. Class A
B. Class AB
C. Class B
D. Class C

10. A half wave diode circuit using ideal diode has an input voltage 20 sin ?t volts. Then average and rms values of output voltage are
Options
A. and 10 V
B. and 10 V
C. and 5 V
D. and 5 V

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