SSC JE Electrical Engineering 25th May 2014 Shift-2
Instructions
For the following questions answer them individually
Question 152
A 4-pole, 3-phase induction motor runs at 1440 rpm on a 50 Hz supply. Find the slip speed
Question 153
Low voltage windings are splaced nearer to the core in the case of concentric windings because
Question 154
If K is the phase-to-phase voltage ratio, then the line-to-line voltage ratio in a 3-phase $$Y-\triangle$$ transformer is
Question 155
In an auto-transformer of voltage ratio $$\frac{V_{1}}{V_{2}},V_{1}>V_{2}$$, the fraction of power tranferred inductively is proportional to
Question 157
Commutation conditions at full load for large DC machines can be efficiently checked by the
Question 158
The emf induced in a DC shunt generator is 230 V. The armature resistance is $$0.1Ω$$. If the armature current is 200 A, the terminal voltage will be
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