Quiz : Psc- Electrician 047/2017

by eees.in · Published June 4, 2020 · Updated August 23, 2020

 

#1. 1 Joule/Second is equal to……?

1Watt

1Calorie

1Newton

1Hentry

#2. 1KWh =……Joules

3600

36 x 10^5

36 x 10^3

36 x 10^6

#3. Dielectric strength of air in KV/mm?

2.1

15

3.2

8.4

#4. Differential compound generators are suitable for….?

electroplating

arc welding

lighting

battery charging

#5. Which connection is best suited for 3 phase 4 wire service?

delta delta

delta star

star star

star delta

#6. Which of the following has negative temperature coefficient of resistance?

copper

silicon

iron

brass

#7. Rotor speed of 3 phase 4 pole 50Hz induction motor is….?

1440 rpm

1500 rpm

1560 rpm

1600 rpm

#8. Barrier potential of silicon at room temperature of 25°C is……?

0.3 V

0.4 V

0.7 V

0.9 V

#9. Convert decimal 9 to binary?

1011

1000

1100

1001

#10. Stray losses are….?

copper loss

magnetic and mechanical loss

eddy current loss

hydteresis loss

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