Electrical Machines Which of the following bearings and their uses are correct both A and B ball bearings → small machines roller bearings → large machines neither 1 nor 2 both A and B ball bearings → small machines roller bearings → large machines neither 1 nor 2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which motors are preferred for refrigeration and air conditioning in smaller units? Stepper motors. Induction motors. Reluctance motors. Universal motors. Stepper motors. Induction motors. Reluctance motors. Universal motors. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If peak value of phase mmf is F max , then peak value of the rotating field caused by three phase is Fmax. (3/2)Fmax. (1/2)Fmax. 3Fmax. Fmax. (3/2)Fmax. (1/2)Fmax. 3Fmax. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In auto transformer if the turn ratio is K, what is the power transferred inductively? (1-K) × input power K × input power both A and B None of these (1-K) × input power K × input power both A and B None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A belt-driven cumulatively-compound dc generator is delivering power to the dc mains. If the Belt snaps then the machine will run as a differentially compounded motor in the same direction differentially compounded motor in the opposite direction cumulative compounded motor in the same direction cumulative compounded motor in opposite direction differentially compounded motor in the same direction differentially compounded motor in the opposite direction cumulative compounded motor in the same direction cumulative compounded motor in opposite direction ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two generators operating in parallel with rating 50MW and 100MW respectively. Both their respective governor settings are identical as 4%, consider same no load frequency. How will the machine share a common load of 100 MW any of the above 50 MW and 50 MW respectively 33.33 MW and 66.67 MW respectively 66.67 MW and 33.33 MW respectively any of the above 50 MW and 50 MW respectively 33.33 MW and 66.67 MW respectively 66.67 MW and 33.33 MW respectively ANSWER DOWNLOAD EXAMIANS APP
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