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Quiz : ISRO Technician B -Electrical/2015
#1. Buchholz relay is a ......?
voltage sensitive device
current sensitive device
gas actuated device
frequency sensitive device
#2. 0.01 Ampere is same as the...?
10 micro ampere
100 micro ampere
1000 micro ampere
10000 micro ampere
#3. The transformer oil used in the transformer provides...?
insulation & cooling
cooling & lubrication
insulation & lubrication
i lubricationnsulation, cooling
#4. The capacity of a capacitor used in the power factor correction is expressed in terms of....?
#5. The main purpose of performing open circuit test test at rated voltage is to measure...?
#6. Transformers are rated in ...?
#7. The resistance of a wire will double, if we double its...?
#8. The internal resistance of the ammeter should be...?
#9. Time constant for an R-L series circuit will be....?
#10. The current in an RLC series resonance circuit will be....?
#11. As the frequency increases, the capacitive reactance of the circuit is...?
first increase then decrease
#12. In a two wattmeter method of measuring 3 phase power, power factor is 0.5 , then one of the wattmeter will read...?
#13. Power factor of purely resistive circuit will be...?
#14. Which of the following DC motor is suitable for high starting torque ?
cumulative compound motor
#15. One micron is....?
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