In self cooled motors the cooling time constant is about ______ than t – McqOptions

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1.	In self cooled motors the cooling time constant is about ______ than the heating time constant because cooling conditions are worse at standstill.
A.	2 to 3 times greater
B.	3 to 4 times greater
C.	4 to 5 times greater
D.	none of the above
Answer» B. 3 to 4 times greater

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