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WorksheetsElectrical and Electronic Measurements
Total questions: 20
Worksheet time: 11mins
A measuring system consists of
Sensors
Variable conversion elements
Signal processing elements
All of these
Which of the following quantities cannot be measured using Multi-Meter:
Resistance
Voltage
Current
Power Factor
In a Circuit, Ammeter should be always connected in ____ arrangement
Series
Parallel
Either in Series or in Parallel
Can be connected in booth
Wattmeter is used to measure which of the following:
Both AC Power and DC Power
DC Power only
AC Power only
An instrument in which the value of ethnical quantity to be measured can be determined from the deflection of the instrument when it has been precalibrated by comparison with an absolute instrument
Absolute instrument
Secondary instrument
Recording instrument
Integrating instrument
A pointer of an instrument once deflected returns to zero position, when the current is removed due to
Action of gravity
Mass of the pointer
Controlling Torque
Damping Torques
An ammeter
Is inserted in series in a circuit and current to be measured flows through it
Is inserted in series in a circuit and part of the current to be measured flows through it
Is connected in parallel in a circuit and current to be measured flows through it
Is connected in parallel in a circuit and only part of the current to the measured flows through it.
_________ and ________________ are the methods of measurements
(a)
Which of the following is not an integrating instrument?
Ampere-hour meter
Watt-hour meter
Voltmeter
All of the above
The deflecting torque in an instrument may be produced
Magnetically
Electrostatically
Thermally
Any of the above
The advantages of moving coil permanent magnet type instrument are
Low power consumption
No hysteresis loss
Efficient eddy current damping
All of the above
Induction type single phase energy meters measure electric energy in
kW
Wh
kWh
VAR
A moving iron instrument can be used for
DC only
AC only
Both AC and DC
None of the above
Systematic errors are
Instrumental errors
Environmental errors
Observational errors
All of the above
Which of the following types of instrument can be used for D.C only?
Moving iron attraction type
Moving Iron repulsion type
Permanent magnet type
Hotwire type
The household energy meter is
An indicating instrument
A recording instrument
An integrating instrument
None of the above
Which of the following is caused by careless handling?
Systematic error
Gross error
Random error
None of the mentioned
‘A system will be error free if we remove all systematic error’
True
False
Which of the following error is caused by poor calibration of the instrument?
Random error
Gross error
Systematic error
Precision error
Which of the following is not a fundamental quantity?
Length
Angle
Time
Luminous intensity
