1. Dead zone of an instrument is:
a) The time required by an instrument to warm up initially
b) The largest change of input quantity for which there is no output of the instrument
c) The time required by an instrument to begin to respond to a change in measurand
d) The unmeasured quantitiy which exceeds the maximum range of the instrument
2. The difference between the measured value and the true value is called as:
a) Relative error
b) Absolute error
c) Gross error
d) Probable error
3. Systematic errors are:
a) Instrumental errors
b) Environmental errors
c) Random errors
d) Both (a) and (b)
4. The power delivered to a 3-phase load can be measured by the use of 2-wattmeter only when the:
a) Load is balanced
b) Load is unbalanced
c) 3-phase load is connected to the source through 3-wires
d) 3-phase load is connected to the source through 4-wires
5. The synchroscope is an instrument for:
a) Checking the voltage of the two circuits
b) Checking of phase sequence of the two circuits
c) Indicating the differences of phases and frequencies of two circuits
d) Checking the power factor of the two circuits
6. If an induction type energy meter runs faster, it can be slowed down by:
a) Lag adjustment
b) Light load adjustment
c) Adjusting the position of the breaking magnet and making it closer to the center of the disk
d) Adjusting the position of the breaking magnet and making it move away from the center of the disk
7. The sensitivity of the Wheatstone bridge depends on:
a) Galvanometer current sensitivity
b) Galvanometer resistance
c) Bridge supply voltage
d) All the above
8. The shunt type ohm meter is not suitable for high resistance measurements because
a) Very low resistance of the meter would short the high unknown resistance
b) Scale is highly cramped for high resistance
c) Full scale value of the meter may be exceeded
d) Battery cannot supply the necessary current for proper meter deflection
9. Which of the following is used to measure the resistance of the electrical insulation
a) Multimeter
b) Ammeter and voltmeter circuut
c) Maxwell's bridge
d) Megger
10. Potentiometer is basically a ____ instrument
a) Digital
b) Deflecting type
c) Null type
d) Recording
a) The time required by an instrument to warm up initially
b) The largest change of input quantity for which there is no output of the instrument
c) The time required by an instrument to begin to respond to a change in measurand
d) The unmeasured quantitiy which exceeds the maximum range of the instrument
2. The difference between the measured value and the true value is called as:
a) Relative error
b) Absolute error
c) Gross error
d) Probable error
3. Systematic errors are:
a) Instrumental errors
b) Environmental errors
c) Random errors
d) Both (a) and (b)
4. The power delivered to a 3-phase load can be measured by the use of 2-wattmeter only when the:
a) Load is balanced
b) Load is unbalanced
c) 3-phase load is connected to the source through 3-wires
d) 3-phase load is connected to the source through 4-wires
5. The synchroscope is an instrument for:
a) Checking the voltage of the two circuits
b) Checking of phase sequence of the two circuits
c) Indicating the differences of phases and frequencies of two circuits
d) Checking the power factor of the two circuits
6. If an induction type energy meter runs faster, it can be slowed down by:
a) Lag adjustment
b) Light load adjustment
c) Adjusting the position of the breaking magnet and making it closer to the center of the disk
d) Adjusting the position of the breaking magnet and making it move away from the center of the disk
7. The sensitivity of the Wheatstone bridge depends on:
a) Galvanometer current sensitivity
b) Galvanometer resistance
c) Bridge supply voltage
d) All the above
8. The shunt type ohm meter is not suitable for high resistance measurements because
a) Very low resistance of the meter would short the high unknown resistance
b) Scale is highly cramped for high resistance
c) Full scale value of the meter may be exceeded
d) Battery cannot supply the necessary current for proper meter deflection
9. Which of the following is used to measure the resistance of the electrical insulation
a) Multimeter
b) Ammeter and voltmeter circuut
c) Maxwell's bridge
d) Megger
10. Potentiometer is basically a ____ instrument
a) Digital
b) Deflecting type
c) Null type
d) Recording
nice one !!!
ReplyDeleteNice
ReplyDelete✌✌
ReplyDeleteMst ek dum
ReplyDelete