Q.69 The efficiency of a jet of water impinging normally with a velocity (V) on series on vanes moving with a velocity (v) is given by the relationAns 1.2.3.
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Q.65 The water in a glass tube wet the surface of the tube. This is due to the reason thatAns 1. More cohesion of water molecules2. Density of glass is more than water3. Adhesion between water is glass ...
Q.61 Transport of free electrons resulting in a transfer of heat from one part of a substance to another is calledAns 1. Forced Convection2. Natural Convection3. Conduction4. RadiationCorrect Ans Provided: 3
Q.67 A curved surface plate is immersed in the liquid. The Weight of liquid above the plate is V, and Horizontal fluid pressure on the plate is H. Then fluid pressure acting this plate is
Q.73 A reaction turbine runs at a speed N under the water head H. Then, the Unit Speed of the turbine isAns 1. Nu=N/H2.3. Nu=NH4.Correct Ans Provided: 4
Q.59 Two forces of 10 N and 20 N act simultaneously at a point, and the angle between them is 60°. The resultant of these two forces isAns 1.2.3.
Q.75Ans 1. 0.6 ltr2. 4.8 Ltr3. 2.4 Ltr4. 1.2 LtrCorrect Ans Provided: 2
Q.63 Two bodies A and, B are projected upwards such that the velocity of A is double the velocity of B. Then, the ratio of heights to which body A and body B will rise isAns 1. 42. ...
Q.72 A rectangular block is floating in a liquid. The distance of the metacentre from the point of buoyance is equal to the ratio ofAns 1. volume of liquid displaced to Moment of inertia of plan2. Area of ...
Q.70 The characteristic curve of ‘unit speed’ verses ‘discharge’ for a reaction turbine shows, as the unit speed increases, the water dischargeAns 1. Decrease parabolically2. Decreases linearly3. Increase linearly4. Increase parabolicallyNote: For this question, discrepancy is found in ...
