Electrical Machines For very sensitive and wide speed control, the preferable control method is Armature control. Ward-Leonard control. Multiple voltage control. Field control. Armature control. Ward-Leonard control. Multiple voltage control. Field control. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Diverters are used only in series motors shunt motors None of these either of these series motors shunt motors None of these either of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The dc motor which can provide zero speed regulation at full load without any controller, is differential compound. shunt. series. cumulative compound. differential compound. shunt. series. cumulative compound. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If s is the slip and f is the supply frequency of an induction motor, the frequency of rotor current is given by sf / 2. f / s. sf. s2. sf / 2. f / s. sf. s2. 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 less with wave winding than with lap winding. Armature emf is more 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 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 more 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 depends on weather the machine is running as a motor or generator. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The DC compound motors are generally Cummulative compound. Level Compound. None of these. Differentical compound. Cummulative compound. Level Compound. None of these. Differentical compound. ANSWER DOWNLOAD EXAMIANS APP
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