The blood donor day is celebrated on____________?
A. 14th june
B. 15th june
C. 16th june
D. None of these
Properly of low temperature co-eflficient of heating element is desired due to which of the following reasons ?
A. To avoid initial rush of current
B. To avoid change in kw rating with temperature
C. Both (a) and (b)
D. Either (a) or (b)