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.Management Sciences
Category: Measurement and Instrumentation
Wagner earthing device is used to eliminate errors due to________________?
A. electrostatic coupling
B. electromagnetic coupling
C. both A. and B.
D. none of the above
For measurement of mutual inductance we can use________________?
A. Anderson bridge
B. Maxwell’s bridge
C. Heaviside bridge
D. Any of the above
The household energy meter is_______________?
A. an indicating instrument
B. a recording instrument
C. an integrating instrument
D. none of the above
For measuring current at high frequency we should use_______________?
A. moving iron instrument
B. electrostatic instrument
C. thermocouple instrument
D. none of the above
Resistances can be measured with the help of_______________?
A. wattmeters
B. voltmeters
C. ammeters
D. ohmmeters and resistance bridges
E. all of the above
Systematic errors are_________________?
A. instrumental errors
B. environmental errors
C. observational errors
D. all of the above
Volt box is a component to_____________?
A. extend voltage range
B. measure voltage
C. compare voltage in a box
D. none of the above
A Weston synchronoscope is a________________?
A. moving coil instrument
B. moving iron instrument
C. dynamometer instrument
D. none of the above
The scale of a rectifier instrument is_________________?
A. linear
B. non-linear
C. either A. or B.
D. neither A. nor B.
A __________ device prevents the oscillation of the moving system and enables the latter to reach its final position quickly___________?
A. deflecting
B. controlling
C. damping
D. any of the above
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