31. The coefficient of viscosity may be determined by
A. capillary tube method
B. orifice type viscometer
C. rotating cylinder method
D. all of these
32. The stability of a dam is checked for
A. tension at the base
B. overturning of the wall or dam
C. sliding of the wall or dam
D. all of these
33. An ideal fluid is frictionless and incompressible.
A. Correct
B. Incorrect
34. A manometer is used to measure
A. low pressure
B. moderate pressure
C. high pressure
D. atmospheric pressure
35. The center of gravity of the volume of the liquid displaced is called
A. center of pressure
B. center of buoyancy
C. metacenter
D. none of these
36. The coefficient of discharge for an external mouthpiece is
A. 0.375
B. 0.5
C. 0.707
D. 0.855
37. A tank of uniform cross-sectional area (A) containing liquid upto height (H1) has an orifice of cross-sectional area (a) at its bottom. The time required to empty the tank completely will be
38. A siphon is used to connect two reservoirs at different levels intervened by a high ridge.
A. True
B. False
39. A flow in which the volume of a fluid and its density does not change during the flow is called __________ flow.
A. incompressible
B. compressible
40. The loss of head due to an obstruction in a pipe is twice the loss of head at its entrance.
A. Agree
B. Disagree