A.To generate high pressures
B.To temporarily store the energy of water
C.To increase the intensity of pressure
D.To lift small quantity of water to a greater height by means of large quantity of water falling through small height
E.None of the above
A.Extreme one to-extreme end
B.Centre of hole at one end to the centre of hole at the other end
C.The formula L = 16 x width
D.None of these
A.When he cannot produce at an economic profit
B.When price falls short of average variable cost at every level of output
C.When price falls short of average fixed cost at every level of output
D.When there is no point where marginal revenue are equal.
A.It will stop working
B.The refrigerant will leak
C.There will be less cooling effect
D.Frost will be formed on cabinet surface
E.(A) and (B) above
A.Slider-crank mechanism
B.Scotch yoke mechanism
C.Scotch yoke mechanism
D.Modified pantograph mechanism
E.None of the above
A.always starts on no load
B.always starts on load
C.always runs at slow speed
D.always starts at high speed
A.200?C
B.340?C
C.440?C
D.540?C
E.640?C
A.Zero
B.Unity
C.Negative
D.Positive
E.Infinite
A.Ferromagnetic materials
B.Ferrimagnetic materials
C.Diamagnetic materials
D.Paramagnetic materials
E.None of the above
A.Are fully balanced
B.Remain unbalanced
C.Are partially balanced
D.Cannot be balanced
E.None of the above
