39) As per Avogadro's law, volume of 1 k mol of any gas is _____ cubic meter at N.T.P.

40) Efficiency of induction motors can be about

41) A weight of 200N is to be pulled over a surface with coefficient of friction 0.2. What is the force needed to start motion?

42) When an orifice for flow measurement in a pipe is replaced by a venturimeter, the pressure drop for the same flow is expected to

43) Operating characteristic (OC) curve shows probability of acceptance Vs fraction _____