Question
Download Solution PDFIdentify whether the given statements with reference to DC machines are true or false.
1. Swinburne's test cannot be performed on a DC series motor.
2. Swinburne's test is a non-loading test.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is option 3):(1 - True, 2 - True)
Concept:
Swinburne's test:
- It is an indirect method of testing a DC shunt machine.
- We can run the machine as a motor or as a generator.
- In this method of testing, no-load or constant losses are measured separately.
- eventually, we can determine the efficiency.
- This test is very convenient and economical as it requires very little power from the supply to perform it.
- Since constant losses are known, the efficiency of Swinburne's test can be pre-determined at any load.
- This method is applicable to constant flux motors. Swinburne's is not suitable for DC series motor as it cannot run on no load
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