Civil Engineering MCQs

Page No. 7

The two important forces for a floating body are___________________?


abuoyancy, gravity


bbuoyancy, pressure


cbuoyancy, inertial


d inertial, gravity


View Answer buoyancy, gravity

Center of pressure on an inclined plane is______________________?


a at the centroid


b above the centroid


c below the centroid


dat metacentre



An open vessel of water is accelerated up an inclined plane. The free water surface will___________________?


abe horizontal


bmake an angle in direction of inclination of inclined plane


cmake an angle in opposite direction to inclination of inclined plane


d any one of above is possible



For a floating body to be in equilibrium __________________?


ameta center should be above e.g.


bcenter of buoyancy and e.g. must lie on same vertical plane


ca righting couple should be formed


dall of the above


View Answer all of the above

Ratio of inertia force to elastic force is known as _____________________?


aMach number


bFroude number


cReynold’s number


dWeber’s number


View Answer Mach number

A ship whose hull length is 100 m is to travel at 10 m/sec. For dynamic similarity, at what velocity should a 1:25 model be towed through water ?


a10 m/sec


b25 m/sec


c 2 m/sec


d50 m/sec


View Answer 2 m/sec

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 ?


a1 : 5


b 1 : 2.5


c1 :25


d 1:V5″


View Answer 1 : 5

For a floating body to be in stable equilibrium, its metacentre should be_________________ ?


a below the center of gravity


bbelow the center of buoyancy


c above the center of buoyancy


dabove the center of gravity



A model of a reservior is drained in 4 mts by opening the sluice gate. The model scale is 1: 225. How long should it take to empty the prototype ?


a900 minutes


b4 minutes


c4 x (225)3/2 minutes


d4 x V225 minutes


View Answer 4 x V225 minutes

When a body floating in a liquid, is displaced slightly, it oscillates about ___________________?


ae.g. of body


bcenter of pressure


ccenter of buoyancy


dmetacentre


View Answer metacentre

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