MENSURATION & INSTRUMENTATION MCQS SET 03

MENSURATION & INSTRUMENTATION MCQS SET 03

1)   The indicating instruments with linear scale is
a. PMMC
b. Electrostatic instrument
c. Dynamometer instrument
d. Thermocouple instrument
ANSWER: PMMC
 

2)   The resistance potential divider method and capacitance potential divider method is used for
a. Both AC and DC
b. Former method can be used for both AC and DC and the later method can be used only for AC
c. Former method can be used for AC only and the later method can be used for both AC and DC
d. Former method can be used for DC only and the later method can be used only for AC
ANSWER: Former method can be used for both AC and DC and the later method can be used only for AC
 

3)   The range of electrostatic voltmeter can be extended by using
a. Resistance potential divider method
b. Capacitance potential divider method
c. Both (a) and (b)
d. None of these
ANSWER: Both (a) and (b)
 

4)   The multiplying factor of electrostatic voltmeters is given by
a. ( C + C v ) / C
b. ( C + C v ) / C v
c. C / ( C + C v )
d. C v / ( C + C v )
ANSWER: ( C + C v ) / C
 

5)   In electrostatic instruments iron is not used for construction. These instruments are
a. Free from hysteresis and eddy current losses
b. Free from temperature errors
c. Dependent on temperature errors
d. Both (a) and (b)
e. None of the above
ANSWER: Both (a) and (b)
 

6)   If an electrostatic voltmeter is used on AC circuit and has non uniform waves, then it will read
a. Average values
b. RMS values
c. Peak values
d. All of these
ANSWER: RMS values
 

7)   Electrostatic voltmeter instruments are suitable for
a. AC work only
b. DC work only
c. Both AC and DC work
d. None of these
ANSWER: Both AC and DC work
 

8)   A Kelvin’s multicellular voltmeter has a torsion head and a coach spring for
a. Protection against accidental fraction of suspension due to vibration
b. For zero adjustment
c. Torsion head for zero adjustment and coach spring for Protection against accidental fraction of suspension due to vibration
d. Torsion head for Protection against accidental fraction of suspension due to vibration and coach spring for zero adjustment
ANSWER: Torsion head for zero adjustment and coach spring for Protection against accidental fraction of suspension due to vibration
 

9)   In electrostatic voltmeters, the principle of their operation is the force of attraction between electric charges on neighboring plates between which potential difference is maintained. The attracted - disc type electrostatic instruments are used for the measurement of
a. Very low voltages
b. Low voltages
c. High voltages
d. Very high voltages
ANSWER: Very high voltages 

10)   Electrostatic instruments are generally used as
a. Voltmeters
b. Ammeters
c. Wattmeters
d. Watt-hour meters
ANSWER: Voltmeters