Manometric head, in case of a centrifugal pump, is equal to Suction lift + Loss of head in suction pipe due to friction + Delivery lift + Loss of head in delivery pipe due to friction + Velocity head in the delivery pipe All of these Work-done per kN of water Losses within the impeller Energy per kN at outlet of impeller Energy per kN at inlet of impeller TRUE ANSWER : ? YOUR ANSWER : ?
The weight per unit volume of a liquid at a standard temperature and pressure is called Specific weight Specific gravity None of these Mass density TRUE ANSWER : ? YOUR ANSWER : ?
A square surface 3 m × 3 m lies in a vertical line in water pipe its upper edge at water surface. The hydrostatic force on square surface is 27,000 kg 13,500 kg 9,000 kg 18,000 kg TRUE ANSWER : ? YOUR ANSWER : ?
Property of a fluid by which its own molecules are attracted is called adhesion viscosity compressibility cohesion TRUE ANSWER : ? YOUR ANSWER : ?
The normal stress in a fluid will be constant in all directions at a point only if It is at rest It is incompressible It has zero viscosity It has uniform viscosity TRUE ANSWER : ? YOUR ANSWER : ?
The force exerted by a moving fluid on an immersed body is directly proportional to the rate of change of momentum due to the presence of the body. This statement is called Newton's law of motion Newton's law of resistance Newton's law of viscosity Newton's law of cooling TRUE ANSWER : ? YOUR ANSWER : ?
Euler's number is the ratio of __________ force to pressure force. Viscous Inertia Gravity None of these TRUE ANSWER : ? YOUR ANSWER : ?
The rise of liquid along the walls of a revolving cylinder about the initial level is _________ the depression of the liquid at the axis of rotation. None of these Less than More than Same as TRUE ANSWER : ? YOUR ANSWER : ?
Metacentric height for small values of angle of heel is the distance between the centre of gravity and centre of buoy-ancy centre of buoyancy and metacentre centre of gravity and metacentre free surface and centre of buoyancy TRUE ANSWER : ? YOUR ANSWER : ?
If cohesion between molecules of a fluid is greater than adhesion between fluid and glass, then the free level of fluid in a dipped glass tube will be Unpredictable Lower than the surface of liquid Higher than the surface of liquid The same as the surface of liquid TRUE ANSWER : ? YOUR ANSWER : ?