Govt Exams Mock Test FREE | Online Quiz Competition

Year 2024

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FAQs

October
Week # 2 Quiz 3

Q1. The type of DC generator suitable for battery charging in automobiles is

DC shunt

DC differentially compound

DC cummulative compound

DC series

Q2. A DC, generator works on the principle of

Lenz's law

Ohm's law

Faraday's law of electromagnetic induction

None of the above

Q3. In case of induction motors, the full load slip is generally

0.3 to 0.5%

20 to 50%

30 to 50%

3 to 5%

Q4. The advantage of salient poles in an alternator is

reduce noise

adoptability to low and medium speed

reduced windage loss

reduce bearing loads and noise.

Q5. Scott connection are used for

1 phase to 3 phase transformation

3 phase to 1 phase transformation

3 phase to 2 phase transformation

none of the above

Q6. Possible three to three phase transformer connections for parallel operation

∆ - Y to ∆ - Y

∆ - ∆ to ∆ - Y

Y - Y to ∆ - Y

∆ - Y to Y - ∆

Q7. The resistance of armature circuit includes

armature winding resistance

armature winding resistance + brush resistance

armature winding resistance + field winding resistance

None of the above

Q8. Silicon content in iron laminations is kept within 5% as it

Increases hysteresis loss

Makes the material brittle

Increases the cost

Reduces the curie point

Q9. Function of interpoles in the DC generator is to

neutralize the reactance voltage

make commutation sparkless

neutralize the cross magnetizing effect of armature reaction

all of the above

Q10. Why is DC series motor not started on no-load?

It attains dangerously high speed

It fails to accelerate

It take long long time to attain the rated speed

It does not pick up

Quiz

Year 2024

September Week # 4 Expire on 21 Oct 2024

October Week # 1 Expire on 31 Oct 2024

October Week # 2 Expire on 07 Nov 2024

October Week # 3 Expire on 14 Nov 2024

October Week # 2 Quiz 3