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SSC JE Electrical 2019 with solution SET-2

SSC JE Electrical 2019 with solution SET-2
 The number of valence electrons of P and Si are respectively?

3 and 4
4 and 5
4 and 4
5 and 4

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Phosphorus (P) has 15 electron i.e 2,8,5. Hence the number of electron in its outermost orbit is 5.
Silicon (Si) has 14 electron i.e 2,8,4. Hence the number of electrons in its outermost orbit is 4.

SSC JE Electrical 2019 with solution SET-2
The input for a condenser in a steam power plant comes from a/an

Air preheater
Economizer
Super heater
Turbine

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Condenser – Condenser is a heat exchanger in which cooling water is circulated through the tubes. The exhaust steam from the turbine enters the condenser where it is cooled and converted to condensate (water).
 


SSC JE Electrical 2019 with solution SET-2
A transistor can be made to operate as a switch by operating it in which of the following regions?

Active region
Saturation region, cut-off region
Active region, saturation region
Active region, cut-off region

ANSWER DOWNLOAD EXAMIANS APP

SSC JE Electrical 2019 with solution SET-2
Under no-load conditions in transmission lines, the receiving end voltage is greater than the sending end voltage. This effect is called

Ferranti effect
Corona effect
Skin effect
Proximity effect

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SSC JE Electrical 2019 with solution SET-2
Which of the following is the correct way of expressing the rating of a fuse?

Ampere-hours
Volts
Amperes
Watts

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SSC JE Electrical 2019 with solution SET-2
Observe the given figure. If the diode is an ideal diode, then what are the values of Io and Vo respectively?

0 A, 0.2 V
2 A, 10 V
10A, 2 V
0.2 A, 0V

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Io = V/R = 20/100
Io = 0.2 A
Since the given diode is an ideal diode therefore there is no voltage drop across it.
Vo = Io × RD
Vo = 0.2 × 0
Vo = 0
Hence Io = 0.2 A & Vo = 0
 

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