Centre of buoyancy always coincides with the centre of gravity remains above the centre of gravity coincides with the centroid of the volume of fluid displaced remains below the centre of gravity TRUE ANSWER : ? YOUR ANSWER : ?
The celerity (velocity) of a pressure wave in a fluid is given by (where K = Bulk modulus, and ρ = Density of the fluid) None of the listed here ρ/K K/ρ K.ρ TRUE ANSWER : ? YOUR ANSWER : ?
The loss of head due to friction in a pipe of uniform diameter in which a viscous flow is taking place, is (where RN = Reynold number) 4/RN 16/RN 1/RN 64/RN TRUE ANSWER : ? YOUR ANSWER : ?
The Thomson's turbine is _________ reaction turbine. A mixed flow An axial flow An outward flow An inward flow TRUE ANSWER : ? YOUR ANSWER : ?
The type of centrifugal pump preferred for a specific speed of 20 r.p.m. is High speed pump with radial flow at outlet Medium speed pump with radial flow at outlet High speed pump with axial flow at outlet Slow speed pump with radial flow at outlet TRUE ANSWER : ? YOUR ANSWER : ?
The value of friction factor ‘f’ for smooth pipes for Reynolds number 106 is approximately equal to 0.0001 0.1 0.001 0.01 TRUE ANSWER : ? YOUR ANSWER : ?
The rise or depression of liquid in a tube due to surface tension wim increase in size of tube will increase decrease remain unaffected may increase or decrease depending on the characteristics of liquid TRUE ANSWER : ? YOUR ANSWER : ?
The centre of pressure acts __________ the centre of gravity of immersed surface. At Above Below None of these TRUE ANSWER : ? YOUR ANSWER : ?
A closed tank containing water is moving in a horizontal direction along a straight line at a constant speed. The tank also contains a steel ball and a bubble of air. If the tank is decelerated horizontally, theni) the ball will move to the frontii) the bubble will move to the frontiii) the ball will move to the reariv) the bubble will move to the rear Find out which of the above statements are correct ? (i) and (iv) (iii) and (iv) (i) and (ii) (ii) and (iii) TRUE ANSWER : ? YOUR ANSWER : ?
With an increase in size of tube, the rise or depression of liquid in the tube due to surface tension will Increase Remain unchanged Depend upon the characteristics of liquid Decrease TRUE ANSWER : ? YOUR ANSWER : ?