Electrical Machines In a DC generator, if P be the number of poles and N be the rpm of the rotor, then frequency of magnetic reversals will be PN/3000. PN/60. PN/120. PN/2. PN/3000. PN/60. PN/120. PN/2. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Lamination of transformer core is made of cast steel. cast iron. silicon steel. wrought iron. cast steel. cast iron. silicon steel. wrought iron. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Slip test is performed to determine direct axis reactance and quadrature axis reactance All of these positive sequence reactance and negative sequence reactance slip direct axis reactance and quadrature axis reactance All of these positive sequence reactance and negative sequence reactance slip ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When two DC series motors are connected in parallel, the resultant speed is zero. less than normal speed. more than normal speed. normal speed. zero. less than normal speed. more than normal speed. normal speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines DC shunt motors are suitable for Lathes. Centrifugal pumps All of this. Blowers and fans. Lathes. Centrifugal pumps All of this. Blowers and fans. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A part an alternator winding consist of eight coils in series, each having an emf of 20 V rms induced in it. Coils are placed in successive slots and between each slot and the next, there is an electrical phase displacement of 30°. Find the emf of eight coils in series 56.91 V. 66.91 V. 76.91 V. 86.91 V. 56.91 V. 66.91 V. 76.91 V. 86.91 V. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS