D.C. Generators MCQ Questions & Answers

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Each section contains 100 MCQs on D.C. Generators .

The purpose of providing dummy coils in a generator is

A) To reduce eddy current losses B) To enhance flux density C) To amplify voltage D) To provide mechanical balance for the rotor

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

Brushes of D.C. machines are made of

A) Carbon B) Soft copper C) Hard copper D) All of above

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

Lap winding is composed of

A) Any even number of conductors B) Any odd number of conductors C) That even number which is exact multiple of poles + 2 D) That even number which is exact multiple of poles

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

Wave winding is composed of

A) Any even number of conductors B) Any odd number of conductors C) That even number which is exact multiple of poles + 2 D) That even number which is exact multiple of poles

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

The commutator segments are connected to the armature conductors by means of

A) Copper lugs B) Resistance wires C) Insulation pads D) Brazing

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

Which of the following components of a D.C, generator plays vital role for providing direct current of a D.C. generator?

A) Dummy coils B) Commutator C) Eye bolt D) Equalizer rings

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

Open circuited armature coil of a D.C. machine is

A) Identified by the scarring of the commutator segment to which open circuited coil is connected B) Indicated by a spark completely around the commutator C) Both (A) and (B) D) None of the above

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

In lap winding, the number of brushes is always

A) Double the number of poles B) Same as the number of poles C) Half the number of poles D) Two

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

Which of the following generating machine will offer constant voltage on all loads?

A) Self-excited generator B) Separately excited generator C) Level compounded generator D) All of the above

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

The number of brushes in a commutator depends on

A) Speed of armature B) Type of winding C) Voltage D) Amount of current to be collected

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

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D.C. Generators MCQ Questions & Answers | Electrical Engineering