Electrical Machines In a dc machine 72 number of coils are used. Find the number of commutator segments required? 74 37 36 72 74 37 36 72 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For satisfactory performance of 3-phase 480V, 60 Hz induction motor, the supply voltage at 50 Hz should be equal to 350 V. 420 V. 480 V. 400 V. 350 V. 420 V. 480 V. 400 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which type of motors are preferred in lifts? None of these DC shunt motors. DC series motors. DC compound motors. None of these DC shunt motors. DC series motors. DC compound motors. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a specific open-circuit voltage of a DC generator, the short-circuit electric current will be maximum when it is shunt connected. differentially compounded. cumulatively compounded. separately excited. shunt connected. differentially compounded. cumulatively compounded. separately excited. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A dc shunt motor runs at a no-load speed of 1140 rpm. At full load, armature reaction weakens the main flux by 5% whereas the armature circuit voltage drops by 10%. The motor full-load speed in rpm is 1200 1000 1203 1080 1200 1000 1203 1080 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In most condition which frame of motor will be preferred? Splash proof. Totally enclosed fan coiled. Open type. Drip proof. Splash proof. Totally enclosed fan coiled. Open type. Drip proof. ANSWER DOWNLOAD EXAMIANS APP
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