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Generally the no-load losses of an electrical machine is represented in its equivalent circuit by a:
  • a)
    Parallel resistance with a low value
  • b)
    Series resistance with a low value
  • c)
    Parallel resistance with a high value
  • d)
    Series resistance with a high value
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
Generally the no-load losses of an electrical machine is represented i...

Explanation:

Equivalent Circuit Representation:
The no-load losses of an electrical machine are represented in its equivalent circuit by a parallel resistance with a high value.

Reasoning:
- No-load losses in an electrical machine mainly consist of core losses (eddy current and hysteresis losses) and friction losses.
- These losses occur when the machine is running without any external load, hence the term "no-load losses".
- These losses are represented in the equivalent circuit as a parallel resistance with a high value because they do not directly affect the flow of current in the machine.
- The high value of the parallel resistance indicates that the losses are relatively small compared to the other components in the circuit.
- This representation helps in analyzing the performance of the machine under different load conditions by isolating the no-load losses from the rest of the circuit components.

Significance:
- Understanding and representing the no-load losses in the equivalent circuit is crucial for accurately predicting the performance of the electrical machine under various operating conditions.
- It allows engineers to design and optimize the machine for maximum efficiency and minimum losses.

In conclusion, the no-load losses of an electrical machine are appropriately represented in its equivalent circuit by a parallel resistance with a high value due to the nature of these losses and their impact on the overall performance of the machine.
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Community Answer
Generally the no-load losses of an electrical machine is represented i...
When the load is not connected to the electric machine, the machine draws a low value of current to keep the machine active or running
  • The current which is taken by the machine is called no-load current.
  • Current is drawn by the core of the machine.
  • The equivalent circuit is represented by a high value of resistance in parallel.
  • The power factor of the machine will be very low.
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Generally the no-load losses of an electrical machine is represented in its equivalent circuit by a:a)Parallel resistance with a low valueb)Series resistance with a low valuec)Parallel resistance with a high valued)Series resistance with a high valueCorrect answer is option 'C'. Can you explain this answer?
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