What is the ratio of displacement thickness to nominal thickness for a linear distribution of velocity in the boundary layer on a flat plate? 0.5 1.5 1 2 TRUE ANSWER : ? YOUR ANSWER : ?
Design of the casing of centrifugal pump should be such as to minimise the Loss of kinetic head None of these Back flow through impeller Loss of static head TRUE ANSWER : ? YOUR ANSWER : ?
Delivery of insufficient quantity of liquid by a pump may be caused by All of these Air leak in the inlet Low rpm Too high a lift TRUE ANSWER : ? YOUR ANSWER : ?
Toothpaste is a Dilatent Newtonion liquid Bingham plastic Pseudoplastic TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is the most common pump for pumping either raw sewage or sludge? Reciprocating pump Gear pump Centrifugal pump Electromagnetic pump TRUE ANSWER : ? YOUR ANSWER : ?
Cavitation in a centrifugal pump results from High discharge velocity High discharge pressure Low barometric pressure High discharge rate TRUE ANSWER : ? YOUR ANSWER : ?
A lubricant 100 times more viscous than water would have a viscosity (in Pa.s) 0.01 1 10 0.1 TRUE ANSWER : ? YOUR ANSWER : ?
In case of hydraulically smooth pipe, the resistance to flow depends only on the Reynolds number, whereas for a hydraulically rough pipe, the resistance to flow is governed by the relative roughness. Two pipes are said to have the same hydraulic roughness, when they have equal values of Relative roughness Absolute roughness All of these Friction co-efficient for flows at equal Reynold number TRUE ANSWER : ? YOUR ANSWER : ?
The ratio of inertial forces to elastic forces is called the __________ number. Euler Reynolds Mach Weber TRUE ANSWER : ? YOUR ANSWER : ?
The __________ pressure is measured by a static tube. None of these Total Dynamic Static TRUE ANSWER : ? YOUR ANSWER : ?