Hopkinson's test on D.C. machines is conducted at

Related MCQs

• The purpose of retardation test on D.C. shunt machines is to find out
• Sumpner's test is conducted on trans-formers to determine
• Open circuit test on transformers is conducted to determine
• Short circuit test on transformers is conducted to determine
• An open-circuit test on a transformer is conducted primarily to measure
• Losses which occur in rotating electric machines and do not occur in transformers are
• In D.C. machines fractional pitch winding is used
• In D.C. machines the residual magnetism is of the order of
• Satisfactory commutation of D.C. machines requires
• In case of D.C. machines, mechanical losses are primary function of