Electrical Machines A generator may loose residual magnetism due to heating. vibrations. over excitation. any of these. heating. vibrations. over excitation. any of these. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 2 pole synchronous machine is operating at 3000 rpm. Find the relation between electrical angular momentum (ωe) and mechanical angular momentum (ωm) ? ωe = ωm ωe = 1/2*ωm ωe = 2*ωm ωe = 4*ωm ωe = ωm ωe = 1/2*ωm ωe = 2*ωm ωe = 4*ωm ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC machines internal characteristics are plotted between Vt vs load current Eg vs load current Eg vs Ia Vt vs Ia Vt vs load current Eg vs load current Eg vs Ia Vt vs Ia ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a step down transformer which one of the following statements is true? Secondary power is less than primary power. Number of secondary turns is less than primary turns. Secondary current is less than primary current. Number of secondary turns is more than that of primary. Secondary power is less than primary power. Number of secondary turns is less than primary turns. Secondary current is less than primary current. Number of secondary turns is more than that of primary. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The function of field regulator in a DC compound motor is to control field current. vary the armature resistance. none of above. limit the armature current. control field current. vary the armature resistance. none of above. limit the armature current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Brushes are always placed on--------------- , in order to achieve sparkles commutation? either GNA or MNA None of these GNA MNA either GNA or MNA None of these GNA MNA ANSWER DOWNLOAD EXAMIANS APP
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