36) The rated value of secondary voltage for single phase and three phase potential transformer as per IS. 3156 shall be

37) In a transformer, the number of turns per volt is 6. The primary and secondary voltages are 240 V and 32 V respectively. Find the number of primary and secondary winding turns ?

38) A 10 kVA transformer is taking a power of 400 watts in open circuit test and 900 watts in short circuit test. What will be the copper loss at 50% of load ?

39) What will be the copper loss at half load, of the full load copper loss in 1600 watts ?

40) The wattmeter reading of transformer on open circuit test is 900 W and on short circuit test at full load current is 1600 W. What will be the iron loss at half full load ?