MCQs on Measurement Part-14

Measurement MCQs

1. An average reading VTVM uses one diode connected in series with an external resistance. A high value of series resistance is used so that the instrument should have_________.

a. Low power consumption

b. A linear v-i characteristics

c. A high input impedance

d. All of the above

 

2. Electronic voltmeters which use rectifiers employ negative feedback. This is done______.

a. To overcome non-linearity of diodes

b. To improve stability

c. To increase the overall gain

d. None of the above

 

3. Measurement in a ramp type DVM is performed during the ______.

a. Position slope

b. Negative slope

c. Both the slope

d. None of the above

 

4. A voltmeter with a broad bandwidth, has_______.

a. High noise level and low sensitivity

b. Low noise level and low sensitivity

c. High noise level and high sensitivity

d. Low noise level and high sensitivity

 

5. The principle of voltage to time conversion is used in_____.

a. Integrating type DVM

b. Successive approximation type DVM

c. Dual slope type DVM

d. None of the above

 

6. SAR type DVM uses the principle of________.

a. Voltage to time conversion

b. Voltage to frequency conversion

c. Voltage to binary conversion

d. Voltage to current conversion

 

7. Measurement by dual slope DVM is performed during______.

a. Rising and falling slope

b. Rising slope

c. Falling slope

d. None of the above

 

8. A DVM measures________.

a. Average value

b. Peak-to-peak value

c. RMS value

d. Peak value

 

9. An accuracy of DVM is specified as______.

a. Number of the least significant digits

b. Percentage of full-scale reading

c. Percentage of actual reading

d. None of the above

 

10.  Which of the following is a correct statement  to a DVM?

a. Use of shunts for dc current measurements increases its accuracy

b. Its accuracy depends upon source impedance

c. It does not have series mode error

d. Common mode rejection is the same for ac and dc voltages