SSC JE Important Questions for 2022 examination - Electrical4u

SSC JE Important Questions for 2022 examination

Q1. A primary cell has an emf of 1.5 V. When short circuited, it gives a current of 3 A. The internal resistance of cell is?

(a) 0.5 Ω

(b) 0.2 Ω

(c) 2 Ω

(d) 4.5 Ω

Q2. What is the maximum number of point of light, fan and socket-outlets that can be connected in one sub-circuit?

(a) Four

(b) Twelve

(c) Six

(d) Ten

Q3. A current of 2A passes through a coil of 350 kms wound on a ring of mean diameter 12 cm. The flux density established in the ring is 1-4 wb/m². Find the value of relative permeability of Iron.

(a) 191

(b) 1200

(c) 600

(d) 210 x 10³

Q4. Electrical Resistivity ρ is 

(a) High for copper as well as for alloy

(b) Low for copper and high for alloy

(c) High for copper and low for alloy 

(d) Low for copper as well as for alloy

✳Also Read - Single Phase Motor : No Load & Block Rotor Test

Q5. Silicon has a preference in IC technology Because?

(a) it is an indirect semiconductor

(b) it is an elemental semiconductor

(c) it is a covalent semiconductor 

(d) of the availability of nature oxide SiO

Q6. In de operation of flouroscent tube, the life of the tube

(a) Ramain same

(b) Decreases by about 80% as that with ac operation

(c) May increase or decrease 

(d) Increases by about 80% as that with ac operation

Q7. If the number of turns of a coil is increased, its inductance. 

(a) none of the options

(b) is increased

(c) is decreased

(d) remains the same

Q8. Which instrument is used to measure the high resistance?

(a) Kelvin's Double bridge

(b) Meggar

(c) Carey-Foster bridge

(d) Wheat stone bridge

Q9 . A  is connected across a 50 V source. The current in the resistor if the colour code is red, orange, orange, silver is?

(a) 21.4 mA

(b) 2 mA

(c) 2.2 mA

(d) 214 mA

Q10. Which of the following motors is used in mixies? 

(a) Reluctance motor 

(b) Universal motors

(c) Repulsion motor

(d) Hysteresis motor

Q11. The Ta Vs Ia graph of a de series motor is a

(a) Straight line throughout

(b) Parabola from no load to over load 

(c) Parabola throughout

(d) Parabola up to full load and straight line at over load

Q12. The no load primary current I, is about ________ Of full load primary current of a transformer. 

(a) 3-5%

(b) above 40%

(c) 15-30% 

(d) 30-40%

Q13. Which of the following motor is non-self starting?

(a) DC series motor

(b) Slip ring induction motor

(c) Synchronous motor

(d) Squirrel cage induction motor

Q14. A de voltmeter has a sensitivity of 1000 2/volt. When it measures half full scale in 100V range, the current through the voltmeter will be?

(a) 50 mA

(b) 1 mA

(c) 0.5 mA

(d) 100 mA

Q15. The electric driver posses the following drawback:

(a) requires a continuous power supply 

(b) requires hazardous fuel requirement

(c) not available with various rating

(d) not adoptable to various environments

Q16. Mutual inductance between two coils is 4 H. If current in one coil changes at the rate of 2A/sec, then emf induced in the other coil is?

(a) 8 V

(b) 2 V

(c) 0.5 V

(d) 5.0 V