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SSC JE Electrical 2019 with solution SET-2

SSC JE Electrical 2019 with solution SET-2
Observe the given network and answer the question? The potential at point a = ?

I2R2
I3R3
E1 − I1R1
E1 − I1R1 & I3R3

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

For the given network the potential at point a can be found by applying KVL.
For loop 1
Va = E1 − I1R1
Va = I3R3
For loop 2
Va = E2 − I2R2
 


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

Turbine
Economizer
Super heater
Air preheater

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

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

5 and 4
4 and 5
4 and 4
3 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
A choke can be represented by a

RC series circuit
R circuit
RL series circuit
RLC series circuit

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

A choke coil is simply a coil having a large inductance, but a small resistance.  A device that can regulate the current in an A.C. circuit without much loss of energy is called as ‘choke coil’.


SSC JE Electrical 2019 with solution SET-2
The water hammer effect is expected in a

Penstock
Draft tube
Turbine casing
Surge tank

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