Q.1

In hindered settling, the particles are

  • placed farther from the wall.
  • not affected by other particles and the wall.
  • near each other,
  • none of these.
Q.2

Rise of liquid in a capillary tube is due to

  • cohesion
  • adhesion
  • both (a) & (b)
  • neither (a) nor (b)
Q.3

A compressor that takes suction at a pressure below atmospheric and discharge against atmospheric pressure is called a __________ pump.

  • sump
  • volute
  • vacuum
  • submerged
Q.4

Weber number is the ratio of inertial force to __________ force.

  • surface tension
  • gravity
  • viscous
  • elastic
Q.5

The curve of metacentre for a floating body __________ the curve of buoyancy.

  • is always below
  • is the evolute of
  • intersects at right angle
  • is tangential to
Q.6

For an unstable equilibrium of a floating body (where, M = metacentre.)

  • M is above G
  • M is below G
  • M & G coincide
  • none of these
Q.7

The head loss due to sudden expansion is

Q.8

Friction factor for a hydraulically smooth pipe at NRe =is f1. If the pipe is further smoothened (i.e., roughness is reduced), the friction factor at the same value of NRe, will

  • increase.
  • decrease.
  • remain unchanged.
  • increase or decrease depending on the pipe material.
Q.9

Curve III in the above diagram represents a/an

  • dilatent fluid
  • pseudo plastic fluid
  • ideal plastic
  • none of these
Q.10
Curve III in the above diagram represents a/an
Q.11
A free jet of water of cross-sectional area 0.01m² and a velocity of 20 m/s strikes a plate and then flows in a plane parallel to the plate as shown in the figure below. The horizontal component of the force on the support is
Q.12
For the manometer set up shown in the figure, the pressure difference PA - PB is given by
0 h : 0 m : 1 s