EMF generated in DC generator is:

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UPPCL Technician (Electrical) 20 Mar 2021 Official Paper (Shift 1)
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  1. pure DC
  2. as a full wave rectifier output
  3. alternating with both positive and negative polarity
  4. as a half wave rectifier output

Answer (Detailed Solution Below)

Option 2 : as a full wave rectifier output
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The correct answer  is option 2): (as a full wave rectifier output)

Concept:

Based on Faraday's law of Induction the EMF produced inside any generator is alternating in nature.

\(E_{emf} =\) -N\(dϕ \over dt\)

N is the number of loops.

\(dϕ \over dt\) is the chang flux.

DC Generator will have Commutator.

The commutator is also known as Mechanical Rectifier (Rectifier is a component that converts AC to DC). Thus we get DC voltage out of DC Generator.

EMF generated in the DC generator is similar to a full wave rectifier output

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