## MGVCL Exam Paper (30-07-2021 Shift 2) The operating time of an inverse definite minimum time (IDMT) overcurrent relay is ____ proportional to the plug-setting multiplier (PSM) and____proportional to the time-multiplier setting (TMS).

directly, inversely
inversely, directly
directly, directly
inversely, inversely

Sensible
Puzzled
Clear
Cloudy

1,3
1,3
2,3
2,4

None of these
90˚C column
60˚C column
75˚C column

## MGVCL Exam Paper (30-07-2021 Shift 2) A 3-phase motor load has a p.f. of 0.397 lagging. The two wattmeter method used to measure power show the input as 30 kW. Find the reading on each wattmeter.

W1 = 5 kW and W2 = 25 kW
W1 = 10 kW and W2 = 20 kW
W1 = -10 kW and W2 = 40 kW
W1 = -5 kW and W2 = 35 kW

## MGVCL Exam Paper (30-07-2021 Shift 2) A power factor less than unity results in which of the following disadvantages?(i) Large kVA rating of equipment(ii)Poor voltage regulation(iii) Greater conductor size

(i), (ii) and (iii)
(ii) and (iii) only
(i) and (ii) only
(i) and (iii) only