Electrical Machines The maximum power developed in cylindrical synchronous machine is occurs at a load angle of Greater than 90o. 0o. 90o. less than 90o. Greater than 90o. 0o. 90o. less than 90o. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Oil is provided in an oil filled transformer for insulating. both cooling and insulation. lubrication. cooling. insulating. both cooling and insulation. lubrication. cooling. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines DC generators are usually designed to develop armature voltages not exceeding 650 V because of the limitations imposed by commutator field winding armature winding starters commutator field winding armature winding starters ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a three phase star - delta transformer, what is the angle difference between primary and secondary phase voltages? Star side lags by -30°. Delta side lags by -30°. Delta side leads by 30°. Star side leads by 30°. Star side lags by -30°. Delta side lags by -30°. Delta side leads by 30°. Star side leads by 30°. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The no load and full load speed of DC mototr are 1400 rpm and 1200 rpm respectively. What is the percentage speed regulation of the motor? 14.28%. 15.30%. 16.67%. 18.25%. 14.28%. 15.30%. 16.67%. 18.25%. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When the mechanical power is developed by a DC motor maximum Back emf is equal. Back emf is equal to half of applied voltage. None of above. back emf is equal to applied voltage. Back emf is equal. Back emf is equal to half of applied voltage. None of above. back emf is equal to applied voltage. ANSWER DOWNLOAD EXAMIANS APP
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