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MCQs

Total Questions : 3218 | Page 35 of 322 pages
Question 341. A hydraulic press has a ram of 10 cms in diameter and a plunger of 1 cm in diameter. The force required on the plunger to raise a weight of 10 tons on the ram is __________ kg.
  1.    10
  2.    100
  3.    1000
  4.    10000
 Discuss Question
Answer: Option B. -> 100
Question 342. Venturimeter and orificemeter measures the __________ of the fluid.
  1.    Pressure
  2.    Maximum velocity
  3.    Average velocity
  4.    Point velocity
 Discuss Question
Answer: Option C. -> Average velocity
Question 343. The rate of change of moment of momentum represents the __________ by the fluid.
  1.    Torque applied
  2.    Force exerted
  3.    Work done
  4.    Power developed
 Discuss Question
Answer: Option A. -> Torque applied
Question 344. Each term in Bernaulli's equation represents the __________ of the fluid.
  1.    Energy per unit mass
  2.    Energy per unit weight
  3.    Force per unit mass
  4.    None of these
 Discuss Question
Answer: Option B. -> Energy per unit weight
Question 345. Drag force on the float of a rotameter is(where Q = flow rate of the )
  1.    ∝Q
  2.    ∝√Q
  3.    ∝Q²
  4.    Constant
 Discuss Question
Answer: Option D. -> Constant
Question 346. Which of the following facilitates close control of flow of fluids?
  1.    Gate valve
  2.    Globe valve
  3.    Butterfly valve
  4.    Check valve
 Discuss Question
Answer: Option B. -> Globe valve
Question 347. In area meter (e.g., rotameter), with increase in the fluid flow rate, the
  1.    Pressure drop increases linearly
  2.    Pressure drop is almost constant
  3.    Area through which fluid flows does not vary
  4.    None of these
 Discuss Question
Answer: Option B. -> Pressure drop is almost constant
Question 348. In case of a __________ the energy of flow is considerably decreased downstream of the machine.
  1.    Blower
  2.    Turbine
  3.    Centrifugal pump
  4.    Centrifugal fan
 Discuss Question
Answer: Option B. -> Turbine
Question 349. Hydraulic radius of 6" x 12" cross-section, is __________ inches.
  1.    2
  2.    0.5
  3.    1.5
  4.    None of these
 Discuss Question
Answer: Option A. -> 2
Question 350. Select the correct statement.
  1.    The discharge through a venturimeter depends upon ?p only and is independent of orientation of the meter
  2.    A venturimeter with a given gage difference discharges at a greater rate, when the flow is vertically downward through it, than when the flow is vertically upward
  3.    For a given pressure difference, the discharge of gas is greater through a venturimeter, when compressibility is taken into account, than when it is neglected
  4.    The overall pressure loss is the same in a given pipe line, whether a venturimeter or a nozzle with the same throat dia is used
 Discuss Question
Answer: Option A. -> The discharge through a venturimeter depends upon ?p only and is independent of orientation of the meter

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