Electrical Machines The back emf produced in a dc motor depends on none of these. P. Z. P and Z. none of these. P. Z. P and Z. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following is not a part of transformer? Commutator. Conservator tank. Tap changer. Radiator. Commutator. Conservator tank. Tap changer. Radiator. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If iron loss and full load copper loss of any transformer are denoted by Pi and Pc, then the load corresponding to maximum efficiency is given by (Pi / Pc)1.6 × full Load. (Pi / Pc) × full Load. (Pi / Pc)2 × full Load. (Pi / Pc)0.5 × Full Load. (Pi / Pc)1.6 × full Load. (Pi / Pc) × full Load. (Pi / Pc)2 × full Load. (Pi / Pc)0.5 × Full Load. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The slip of an induction motor during DC rheostatic braking is s. 2 - s. 2 + s. 1 - s. s. 2 - s. 2 + s. 1 - s. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole lap wound dc generator has 4 brushes, if one of the brush is damaged, what will be the change in V, I and P ratings V/2, I/2 and P/4 V/2, I and P/2 V, I/2 and P/2 V, I and P V/2, I/2 and P/4 V/2, I and P/2 V, I/2 and P/2 V, I and P ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A separately excited DC motor has an armature resistance of 0.5 Ohm. The supply voltage is 250V. Armature current is 20A and the speed of rotation is 1500 rpm. Find the torque developed? 15.6 Nm Zero 15.28 Nm 16.55 Nm 15.6 Nm Zero 15.28 Nm 16.55 Nm ANSWER DOWNLOAD EXAMIANS APP
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