Electrical Machines The torque speed characteristics of a AC servomotor is approximately parabola hyperbola linearised any of the above parabola hyperbola linearised any of the above ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following methods are used to control the speed of DC motors is armature circuit resistance control All of these supply voltage control field current control armature circuit resistance control All of these supply voltage control field current control ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What type of connection is made in between the inter-pole and the field winding? Parallel. Series. Compound. None of the options. Parallel. Series. Compound. None of the options. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In dc machine armature windings are placed on rotor because of the necessity for generation of voltage. electromechanical energy conversion. development of torque. commutation. generation of voltage. electromechanical energy conversion. development of torque. commutation. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a transformer operating at constant voltage if the input frequency increases, the core loss decrease. remains constant. increase. None of these decrease. remains constant. increase. None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A short-shunt cumulatively-compounded dc generator builds up a voltage of 220 V at no load at rated speed. If it is operated as a differentially compounded generator, other things remaining the same, it would build up 220 V somewhat less than 220 V 6 V more than 220 V 220 V somewhat less than 220 V 6 V more than 220 V ANSWER DOWNLOAD EXAMIANS APP
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