Electrical Machines A commutator with a diameter of 50 cm rotating at 1000 rpm. For a brush width of 1.5 cm, find the time of commutation in ms. 0.512. 0.573. 0.443. 0.649. 0.512. 0.573. 0.443. 0.649. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In an induction motor, the no-load slip is generally equal to less than 1 %. zero. 4 %. 1.5 %. less than 1 %. zero. 4 %. 1.5 %. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The sequence of induction motor is RYB, then the direction of induction motor can be changed by which of the following sequence? BYR All of these BRY RBY BYR All of these BRY RBY ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The supply voltage to an induction motor is reduced by 10%. By what percentage, approximately, will the maximum torque decrease? 19% 10% 40% 5% 19% 10% 40% 5% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following statement is true for an AC synchronous motor? It is a step angled motor. It is a constant speed motor. It is a high reluctance motor. It is a variable speed motor. It is a step angled motor. It is a constant speed motor. It is a high reluctance motor. It is a variable speed motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An auto transformer having a transformation ratio of 0.8 supplies a load pf 10 KW. The power transfered inductively from the primary to secondary is 2 KW. 8 KW. 10 KW. 0. 2 KW. 8 KW. 10 KW. 0. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS