The density of hydrogen is __________ times the density of air?

Related Mcqs:

If an insulating material is operated beyond the maximum allowable temperature, its life is_____________?

A. drastically increased B. drastically reduced C. unaffected D. none of the above...

The mcrease in heat dissipation by air blasts is due to increase in______________?

A. conduction B. convection E. radiation D. any ofthe above...

____________are always double layer type?

A. Closed windings B. Open windings C. Either of the above D. None of the above...

Which of the following in an application of D.C. motors?

A. Traction B. Drives for process industry C. Battery driven vehicles D. Automatic control E. All of the above...

The cold rolled grain oriented steel has _________ permeability in the direction of the grain orientation?

A. minimum B. maximum C. nil D. none of the above...