SSC JE Electrical Important MCQ Part 11

Attempt Free SSC JE Electrical Important MCQ Part 11 Here. Read The Important SSC MCQ From Below.

SSC JE Electrical Important MCQ PDF Part 11

1.If the forward anode current of a thyristor is reduced below its holding current then the thyristor remains in _____________.

A. ON state

B. OFF State

C. Blocking State

D. Reverse State

Answer : C

2.The minimum anode current to maintain the thyristor in on state is __________.

A. Holding Current

B. Latching Current

C. Reverse Current

D. Reserve Current

Answer : A

3.The number of lumens emitted by the source per unit solid angle is ____________.

A. Lumen

B. Candle Power

C. Luminous Intensity

D. Brightness

Answer : B

SSC JE Electrical Important MCQ Part 11

4.Determine the distance for a 25 c.p lamp from a normally placed screen in order that the illumination shall be 5 lux.

A. 2M

B. 2.24M

C. 3.5M

D. 4.2M

Answer : B (Illumination=Candle Power/(Distance)² So (Distance)² =Candle Power/Illumination=25/5=5 or Distance=√5=2.24 M)

5. If αdc = 0.98 then βdc is _____.

A. 0.49

B. 49

C. 0.59

D. 59

Answer : B (β = ɑ/(1 – ɑ) =0.98/(1 – 0.98)=49)

6.What is the emf equation of a transformer

A. E₂/E₁=N₂/N₁

B. E₁/E₂=N₂/N₁

C. E₂/E₁=N₁/N₂

D. E₁E₂=N₁N₂

Answer : A

7.In a transformer which of the following does not change

A. Voltage

B. Current

C. Frequency

D. Power

Answer : C

SSC JE Electrical Important MCQ Part 11

8.What is the binary equivalent of decimal 14

A. 1400

B. 1110

C. 0014

D. 1101

Answer : B

(Step 1: Divide (14)₁₀ successively by 2 until the quotient is 0:

14/2 = 7, remainder is 0
7/2 = 3, remainder is 1
3/2 = 1, remainder is 1
1/2 = 0, remainder is 1

Step 2: Read from the bottom (MSB) to top (LSB) as 1110.

So, 1110 is the binary equivalent of decimal number 14)

SSC JE Electrical Important MCQ Part 11

9.What is the current gain of Common Collector configuration

A. Ic/Ib

B. Ic/Ie

C. Ie/Ib

D. Ie/Ic

Answer : C (The current amplification factor is defined as the ratio of the output current to the input current. In common emitter configuration, the output current is emitter current I_E, whereas the input current is base current I_B)

10.The point where DC load line and forward characteristic intersect is

A. Origin Point

B. Quiescent Point

C. X intersect Point

D. Y intersect Point

Answer : B

11.If Input and Output junctions of a transistor are forward biased, then the region of operation is __________.

A. Active

B. Saturated

C. Cut off

D. Inverted

Answer : B

SSC JE Electrical Important MCQ Part 11

12.The relation between Magnetic Field Intensity and Magnetic Flux Density is ________

A. B = μH

B. H = μB

C. μ = BH

D. μHB = 1

Answer : A

13.Which of the following is a donor impurity element to form a N type semiconductor

A. Boron

B. Aluminum

C. Phosphorous

D. Gallium

Answer : C ( Donor impurity -phosphorus, arsenic, antimony, bismuth )

14.If the width of forbidden gap between valence and conduction band is very large, then the material is ______________.

A. Conductor

B. Insulator

C. Semi-conductor

D. Solid

Answer : B

SSC JE Electrical Important MCQ Part 11

15.The current Io of Figure is

A. – 4 A

B. -2 A

C. 4 A

D. 16 A

Answer : A (Io+10=2+4 or Io=6-10=-4)

16.One kWh of electrical energy equals

A. 3600 J

B. 860 kcal

C. 3600 W

D. 4186 J

Answer : B

(1 kwh = 3.6 mega joules

1 mega joules= 239005.74 calories

3.6 mega joules = 860420.65 calories.

1 kwh = 860420.65 calories=860 kcal)

SSC JE Electrical Important MCQ Part 11

17.The effect of connecting an additional parallel load to an electrical supply source is to increase the

A. Resistance of the load

B. Voltage of the source

C. Current taken from the source

D. P.D. across the load

Answer : C

18.A 10 Ω resistor is connected in parallel with a 15 Ω resistor and the combination in series with a 12 Ω resistor. The equivalent resistance of the circuit is

A. 37 Ω

B. 18 Ω

C. 27 Ω

D. 4 Ω

Answer : B (R Parallel=10*15/25=6 Total R=6+12=18 Ω)

SSC JE Electrical Important MCQ Part 11

19.Flux in a magnetic circuit is analogous to

A. Voltage in an electric circuit

B. Current in an electric circuit

C. Power in an electric circuit

D. Resistance in an electric circuit

Answer : B