DC Motors The friction and windage losses in a dc motor depends upon Armature current Flux Field and armature resistance Speed Armature current Flux Field and armature resistance Speed ANSWER DOWNLOAD EXAMIANS APP
DC Motors A dc series motor is most suitable for Pump Cranes Punch presses Lathes Pump Cranes Punch presses Lathes ANSWER DOWNLOAD EXAMIANS APP
DC Motors For constant torque drive which speed control method is preferred? Field control Mechanical loading system Armature voltage control Shunt armature control Field control Mechanical loading system Armature voltage control Shunt armature control ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which one of the following is not necessarily the advantage of D.C. motors over A.C. motors? Low cost Stability Wide speed range High starting torque Low cost Stability Wide speed range High starting torque ANSWER DOWNLOAD EXAMIANS APP
DC Motors The speed of a series motor at no load is 4000 rpm 2000 rpm Infinity 1000 rpm 4000 rpm 2000 rpm Infinity 1000 rpm ANSWER DOWNLOAD EXAMIANS APP
DC Motors Dc shunt motors are used for driving Cranes Machine tools Trains Hoist Cranes Machine tools Trains Hoist ANSWER DOWNLOAD EXAMIANS APP