Question

A device is operating at Ic = 4A & Vce = 50V. For the device to operate at Ic = 20A (Without damaging),

(a) voltage should be increased

(b) voltage should be reduced

(c) voltage can be kept constant

(d) current has to increased further

I had been asked this question during a job interview.

My question comes from SOAs in division Power Electronics Devices of Power Electronics

Answer 1

Right answer is (b) voltage should be reduced

To elaborate: For safe operation, the values should be within the limits. P = V.I – with increase in one of the values, another value should decrease.