Electrical Machines The field divertor resistance for a DC series motor is of order of 0.1 Ω 100 Ω 10 Ω 50 Ω 0.1 Ω 100 Ω 10 Ω 50 Ω ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Field winding of a DC series motor is usually provided with thick wire as it carries large load current. to provide large flux. to reduce the insulation of materials. in order to reduce eddy current to provide large flux. as it carries large load current. to provide large flux. to reduce the insulation of materials. in order to reduce eddy current to provide large flux. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The speed of rotation of 5th harmonic component in the stator of an induction motor is (1 / 15) times the synchronous speed. 5 times the synchronous speed. 0.5 times the synchronous speed. (1 / 5) times the synchronous speed. (1 / 15) times the synchronous speed. 5 times the synchronous speed. 0.5 times the synchronous speed. (1 / 5) times the synchronous speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The residual magnetism of a self-excited dc generator is lost. To build up its emf again the armature connection must be reversed field winding must be excited by low voltage dc supply the field winding must be replaced the field winding connection must be reversed the armature connection must be reversed field winding must be excited by low voltage dc supply the field winding must be replaced the field winding connection must be reversed ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In an induction motor, air gap power is 10 Kw and mechanically developed power is 8 Kw. What are the rotor ohmic losses? 2KW 3KW 1.5KW 0.5Kw 2KW 3KW 1.5KW 0.5Kw ANSWER DOWNLOAD EXAMIANS APP
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/120. PN/3000. PN/60. PN/2. PN/120. PN/3000. PN/60. PN/2. ANSWER DOWNLOAD EXAMIANS APP
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