Two pipe systems are said to be equivalent when length and diameter are same in two systems friction factor and length are same in two systems head loss and discharge are same in two systems length of pipe and discharge are same in two systems TRUE ANSWER : ? YOUR ANSWER : ?
A model of torpedo is tested in a towing tank at a velocity of 25 m/sec. The prototype is expected to attain a velocity of 5 m/sec. What model scale has been used ? 1 : 2.5 1 :25 1:50 1 : 5 TRUE ANSWER : ? YOUR ANSWER : ?
The distance from pipe boundary, at which the turbulent shear stress is one-third die wall shear stress, is (where R is the radius of pipe) 1/2 R 1/3 R 2/3 R 3/4 R TRUE ANSWER : ? YOUR ANSWER : ?
Mercury is often used in barometer because the height of barometer will be less its vapour pressure is so low that it may be neglected both (B) and (C) it is the best liquid TRUE ANSWER : ? YOUR ANSWER : ?
Uniform flow occurs when the flow is steady size and cross section change uniformly along length the flow is streamline size and shape of the cross section in a particular length remain constant TRUE ANSWER : ? YOUR ANSWER : ?
A fluid is said to be ideal, if it is inviscous and incompressible incompressible inviscous and compressible inviscous TRUE ANSWER : ? YOUR ANSWER : ?
For laminar flow in a pipe of circular cross-section, the Darcy’s friction factor f is directly proportional to Reynolds number and independent of pipe wall roughness inversely proportional to Reynolds number and indpendent of pipe wall roughness inversely proportional to Reynolds number and directly proportional to pipe wall roughness directly proportional to pipe wall roughness and independent of Reynolds number TRUE ANSWER : ? YOUR ANSWER : ?
The increase in meta centric height i) increases stability ii) decreases stability iii) increases comfort for passengers iv) decreases comfort for passengers The correct answer is (i) and (iii) (ii) and (iv) (ii) and (iii) (i) and (iv) TRUE ANSWER : ? YOUR ANSWER : ?
The Prartdtl mixing length is None of these maximum at the pipe wall independent of shear stress zero at the pipe wall TRUE ANSWER : ? YOUR ANSWER : ?
The difference of pressure between the inside and outside of a liquid drop is (d)p = 2T/r (b)p = T/r (a)p = Txr p = T/2r TRUE ANSWER : ? YOUR ANSWER : ?