The efficiency of a hydraulic press is given by (where W = Weight lifted by ram, P = Force applied on plunger, A = Area of ram, and a = Area of plunger) (p/W) × (A/a) (W/p) × (a/A) (W/p) × (A/a) (p/W) × (a/A) TRUE ANSWER : ? YOUR ANSWER : ?
A vertical wall is subjected to a pressure due to one kind of liquid, on one of its sides. Which of the following statement is correct? The pressure on the bottom of the wall is maximum The pressure on the bottom of the wall is zero The pressure on the wall at the liquid level is zero, and on the bottom of the wall is maximum The pressure on the wall at the liquid level is minimum TRUE ANSWER : ? YOUR ANSWER : ?
For pipes, laminar flow occurs when Reynolds number is Less than 4000 Less than 2000 Between 2000 and 4000 More than 4000 TRUE ANSWER : ? YOUR ANSWER : ?
The total pressure on the top of a closed cylindrical vessel completely filled up with a liquid is Inversely proportional to (radius)2 Directly proportional to (radius)4 Inversely proportional to (radius)4 Directly proportional to (radius)2 TRUE ANSWER : ? YOUR ANSWER : ?
The capillary rise at 20°C in a clean glass tube of 1 mm bore containing water is ap-proximately 30 mm 20 mm 10 mm 5 mm TRUE ANSWER : ? YOUR ANSWER : ?
A turbine pump is basically a centrifugal pump equipped additionally with Inlet guide blades Vaned diffusion casing Adjustable blades Backward curved blades TRUE ANSWER : ? YOUR ANSWER : ?
Bulk modulus of a fluid __________ as the pressure increases. Decreases Remain same None of these Increases TRUE ANSWER : ? YOUR ANSWER : ?
The value of coefficient of discharge is __________ the value of coefficient of velocity. More than Same as Less than None of these TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following statement is correct as regard to water wheels? They are suitable even for low water heads They have slow speeds They give constant efficiency, even if the discharge is not constant All of these TRUE ANSWER : ? YOUR ANSWER : ?
A point, in a compressible flow where the velocity of fluid is zero, is called Vena contracta Critical point Stagnation point None of the listed here TRUE ANSWER : ? YOUR ANSWER : ?