Electrical Machines In case of induction motors the ratio of length to pole pitch for minimum cost, is taken as 3 to 5. 1.5 to 2. 1.0. 2 to 3. 3 to 5. 1.5 to 2. 1.0. 2 to 3. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Variation in speed by ward-Leonard control of DC motors occurs due to variation in Armature current. Supply voltage. Armature voltage. Field excitaion. Armature current. Supply voltage. Armature voltage. Field excitaion. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines There are two 2-pole DC machines. Main field axis of machine A is horizontal and that of B is vertical. It is preferable to purchase none of these any of the two machines machine B machine A none of these any of the two machines machine B machine A ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What type of connection is made in between the inter-pole and the field winding? Parallel. Compound. Series. None of the options. Parallel. Compound. Series. None of the options. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines To get the speed of DC motor more than normal without wastage of electrical energy _____________ is used. any of above method. rheostatic control. none of above. Ward Leonard control. any of above method. rheostatic control. none of above. Ward Leonard control. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines On which of the following factor/factors the speed of a DC motor depends upon? Field flux. Applied voltage. All of these. Armature current. Field flux. Applied voltage. All of these. Armature current. ANSWER DOWNLOAD EXAMIANS APP
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