Electrical Machines Which of the following motor is suitable for frequent starting and stoppings? Capacitor start motor Capacitor start capacitor run motor Resistance split phase motor All of these Capacitor start motor Capacitor start capacitor run motor Resistance split phase motor All of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC machine current and emf in armature are unidirectional emf in armature conductors and at the terminals is alternating. current and emf at the terminals are alternating. current and emf in armature are alternating. current and emf in armature are unidirectional emf in armature conductors and at the terminals is alternating. current and emf at the terminals are alternating. current and emf in armature are alternating. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC generator the actual flux distribution depends upon shape of the pole shoe. size of air gap. clearance between tips of the adjacent pole shoes. all of above. shape of the pole shoe. size of air gap. clearance between tips of the adjacent pole shoes. all of above. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When R2 is rotor resistance, X2 the rotor reactance at supply frequency and s the slip, then the condition for maximum torque under running condition will be R2 = s2X2. R2 = s2X2. sR2 = X2. R2 = sX2. R2 = s2X2. R2 = s2X2. sR2 = X2. R2 = sX2. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC machine, for the same value of Æ, Z and N; which one of the following statements is correct? Armature emf is same as long as the flux density in the air gap remains the same. Armature emf is more with wave winding than with lap winding. Armature emf depends on weather the machine is running as a motor or generator. Armature emf is less with wave winding than with lap winding. Armature emf is same as long as the flux density in the air gap remains the same. Armature emf is more with wave winding than with lap winding. Armature emf depends on weather the machine is running as a motor or generator. Armature emf is less with wave winding than with lap winding. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When maximum flux density is constant, the eddy current losses are proportional to V2 V f2 f V2 V f2 f ANSWER DOWNLOAD EXAMIANS APP
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