01. A measuring system consists of
Sensors
Variable conversion elements
Signal processing elements
All of these
02. 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
03. 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
04. In hot wire instrument, the sensing wire is made of
Copper
Silver
Platinum-iridium
Copper-Nickel
05. 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.
06. Which of the following material will be preferred as a shunt for extending the range of measurement of a voltmeter
Copper
Steel
Aluminum
Manganin
07. What should be the size of the slide wire of the potentiometer to make it to achieve high accuracy?
As long as possible
As short as possible
1 meter
Neither too thin nor too thick
08. Which of the following is not an integrating instrument?
Ampere-hour meter
Watt-hour meter
Voltmeter
All of the above
09. The deflecting torque in an instrument may be produced
Magnetically
Electrostatically
Thermally
Any of the above
10. The advantages of moving coil permanent magnet type instrument are
Low power consumption
No hysteresis loss
Efficiency eddy current damping
All of the above
11. In eddy-current damping systems, the disc is usually made of
Non-conducting and Non-magnetic material
Non-conducting and magnetic material
Conducting and magnetic material
Conducting and Non-magnetic material
12. 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
13. Which type of wattmeter cannot be used for both A.C and D.C?
Dynamometer type
Electrostatic type
Induction Type
None of the above
14. A moving iron type ammeter has few turns of thick wire so that
Resistance is less
Sensitivity is high
Damping is effective
Scale is large
15. Which of the following types of instrument can’t be used fo D.C
Moving iron-attraction type
Moving coil permanent magnets type
Hotwire type
Induction type
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