Biofluid Mechanics Mid - II, November - 2014

1.Rotameter is used to measure
  • Viscosity
  • Density
  • Flow meter
  • Pressure
Answer: C
2.More accurate flow measuring instrument is
  • Orifice meter
  • Venturi meter
  • Elbow meter
  • Flow meter
Answer: B
3.The range of coefficient discharge for orifice meter is
  • 0.6-0.65
  • 0.7 to 0.85
  • 0.85-0.92
  • 0.92 to 0.98
Answer: A
4.________________ is used to measure the flow through the pipe
  • Elbow meter
  • Manometer
  • Nozzle
  • Displacement pump
Answer: A
5.________________causes a fluid to move by trapping a fixed amount of it then forcing (displacing) that trapped volume into the discharge pipe.
  • A positive displacement pump
  • A negative displacement pump
  • Both
  • None
Answer: A
6.__________ is a type of positive displacement rotary pump.
  • Moving vane pump
  • Gear pump
  • Screw pump
  • All of the above
Answer: D
7.Reciprocating pumps includes _________
  • Plunger pumps
  • Diaphragm pumps
  • Both
  • None
Answer: C
8.The ______is a frictional force that acts parallel but opposite to the direction of motion
  • Reynolds’s number
  • Drag
  • Terminal velocity
  • None of the above
Answer: B
9.This flow measurement device is inserted directly into the pipeline to measure pressure
  • Orifice meter
  • Venturi meter
  • Manometer
  • Rotameter
Answer: B
10.Drag force ____________with increase in the free stream velocity.
  • Increases
  • Decreases
  • Remains constant
  • No relation
Answer: A
11.Hagen-Poisseuille equation describes steady flow through_______________
Answer: Rigid tubes.
12.When the fluid flows through an elbow higher pressure results at the _____________
Answer: outer wall
13.________________________are pumps that move fluid using the principles of rotation.
Answer: Positive displacement rotary pumps
14.In _____________pumps, the plunger pressurizes hydraulic oil which is used to flex a diaphragm in the pumping cylinder.
Answer: Diaphragm
15._____________________ is the common unit of power which is used to designate the power transformed to the fluid.
Answer: Hydraulic Horse power
16.The coefficient of the drag is the ratio between_______________ and ________________
Answer: Drag force and Dynamic force
17.____________ meters are not suitable for measuring pressures larger than 70kPa
Answer: Manometers
18.If the pressure drop is between 10% and 40% use of the midpoint properties will yield accurate _______________ losses.
Answer: Friction
19.A ________________ is a bent or a curved tube that carries fluid from a fluid surface at high elevation to fluid surface at low elevation.
Answer: Siphon
20.When a pipe with low friction factor is converted to an equivalent pipe with higher friction factor, the length ___________________
Answer: Decreases