Electrical Machines Which of the following machine is invariably provided with forced ventilation? Fractional horse power slow speed motor. Hermetically sealed motor of refrigerator. 50 MW generator in a power plant. Fractional horse power high speed motor. Fractional horse power slow speed motor. Hermetically sealed motor of refrigerator. 50 MW generator in a power plant. Fractional horse power high speed motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Minimum allowable resistivity of power transformer insulating oil is generally taken as 2 X 1012 Ω - cm at 27°C and 0.2 X 1012 1 X 1012 Ω - cm at 27°C and 0.1 X 1012 4 X 1012 Ω - cm at 27°C and 0.4 X 1012 3 X 1012 Ω - cm at 27°C and 0.3 X 1012 2 X 1012 Ω - cm at 27°C and 0.2 X 1012 1 X 1012 Ω - cm at 27°C and 0.1 X 1012 4 X 1012 Ω - cm at 27°C and 0.4 X 1012 3 X 1012 Ω - cm at 27°C and 0.3 X 1012 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the actual arrangement of series wound generator? Armature and field both are connected. Armature and field both are in series with the load. Armature winding is in series with load. Armature and field both are parallel. Armature and field both are connected. Armature and field both are in series with the load. Armature winding is in series with load. Armature and field both are parallel. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC machine, the armature windings are placed on the rotor because of necessity for generation of voltage. commutation. development of torque. electromechanical energy conversion. generation of voltage. commutation. development of torque. electromechanical energy conversion. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The 3 - Φ induction motor with rotor circuit open will get over heated. make noise. not run. run normally. get over heated. make noise. not run. run normally. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For the speed control of polyphase squirrel cage induction motor, if frequency of operation is decreased with either of these None of these constant supply voltage V, starting torque Tst decreases constant V, Tst increases either of these None of these constant supply voltage V, starting torque Tst decreases constant V, Tst increases ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS