1. Bernoulli’s principle does not explain?
A)    Curved path of a spinning ball
B)    Lift of a jet
C)    Working of a point sprayer
D)    Automatic blowing of 7 the roots of houses during blizzard in hill areas

2. An ideal liquid flows through a horizontal tube of variable diameter. The pressure is lowest where the?
A)    Velocity is highest
B)    Velocity is lowest
C)    Diameter is largest         RailwayExam Syllabus - 2016
D)    None of these

3. When a fluid passes through the constricted part of a pipe its?
A)    Velocity and pressure decrease
B)    Velocity and pressure increase
C)    Velocity decreases and pressure increases
D)    Velocity increases and pressure decreases

4. The rate of leak from a hole in a tank is?
A)    Independent of its height from the bottom
B)    More if situated near the bottom
C)    More if situated near its top
D)    More at midway between top and bottom

5.  Dynamic lift is related to ?
A)    Bernoulli’s theorem
B)    Archimedes principle
C)    Equation of continuity
D)    Pascal’s law

6.  A gale blows over a house. The force due to the gale on the roof is?
A)    In the downward direction
B)    In the upward direction
C)    Zero
D)    Horizontal                       Cbt Practice Bits

7.  A large tank having a small hole at the bottom is filled with water to a height h. if the stream of water coming out of the hole is directed vertically upwards it will?
A)    Rise to height h
B)    Rise to a height less than h
C)    Rise to a height greater than h
D)    Not rise at all

8.  If a stream of air is blown under one of the pans of a physical balance in equilibrium, then the pan will?
A)    Go up
B)    Go down
C)    Not be affected
D)    None of these

9.  The velocity of flow of a liquid through an orifice at the bottom of a tank depends on the?
A)    Area of the cross-section of the orifice
B)    Height of the liquid above the orifice
C)    Acceleration due to gravity
D)    Both (b) and (c)