Electrical Machines The starting resistance of DC motor is generally 1000 ohms. Infinitely large. Low. around 500 ohms. 1000 ohms. Infinitely large. Low. around 500 ohms. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Armature resistance control method is used for the _______ ? None of these both 1 and 2 above rated speed below rated speed None of these both 1 and 2 above rated speed below rated speed ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In the 3-phase induction motor, the resultant flux is of a constant nature and is 3/2 times maximum value of flux due to any phase equal to φm, where φm is the maximum flux due to any phase 1/2 times maximum value of flux due to any phase 3 times maximum value of flux due to any phase 3/2 times maximum value of flux due to any phase equal to φm, where φm is the maximum flux due to any phase 1/2 times maximum value of flux due to any phase 3 times maximum value of flux due to any phase ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is/are the advantages of parallel operation of alternators? Increase efficiency under light load conditions continuity supply is maintained Increase in reliability All of these Increase efficiency under light load conditions continuity supply is maintained Increase in reliability All of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Dummy coils are used for mechanical balancing. reducing armature reaction. All of these increasing efficiency. mechanical balancing. reducing armature reaction. All of these increasing efficiency. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Where the shunt generators are widely used? Where voltage variation is needed over a wide load range. Where often load fluctuation is occurred. Where the load is very high. Where a constant voltage is required over a narrow load range. Where voltage variation is needed over a wide load range. Where often load fluctuation is occurred. Where the load is very high. Where a constant voltage is required over a narrow load range. ANSWER DOWNLOAD EXAMIANS APP
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