Electrical Machines A commutator with a diameter of 50 cm rotating at 1000 rpm. For a brush width of 1.5 cm, find the time of commutation in ms. 0.512. 0.649. 0.443. 0.573. 0.512. 0.649. 0.443. 0.573. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The direction of rotation of a DC motor can be determent by Amperes law. Flemings left hand rule. Flemings right hand rule. Lenzs law. Amperes law. Flemings left hand rule. Flemings right hand rule. Lenzs law. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole wave wound dc motor having flux per pole of 9.56 X 10-3 Wb contains 460 armature conductors with armature resistance of 0.6 ohm. Calculate the starting current flowing through the armature if the supply voltage is 240 volt. 0.5 Amp. 400 Amp. 320 Amp. 800 Amp. 0.5 Amp. 400 Amp. 320 Amp. 800 Amp. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines From no load to full load the slip will not change. None of these slightly increase. slightly decrease. not change. None of these slightly increase. slightly decrease. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Flux density under trailing pole tips in case of generator will increase either increase or decrease None of these decrease increase either increase or decrease None of these decrease ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a synchronous motor electromagnetic power varies inversely as applied voltage directly as applied voltage directly as square of applied voltage None of these inversely as applied voltage directly as applied voltage directly as square of applied voltage None of these ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS