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MCQs

Total Questions : 1709 | Page 148 of 171 pages
Question 1471. The theoretical value of coefficient of contraction of a sharp edged orifice is_______________?
  1.    0.611
  2.    0.85
  3.    0.98
  4.    1.00
 Discuss Question
Answer: Option A. -> 0.611
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1472. Least possible value of correction factor for________________?
1. kinetic energy is zero
2. kinetic energy is 1
3. momentum is zero
4. momentum is 1
The correct statements are?
  1.    (1) and (3)
  2.    (2) and (3)
  3.    (1) and (4)
  4.    (2) and (4)
 Discuss Question
Answer: Option D. -> (2) and (4)
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1473. Which of the following velocity potentials satisfies continuity equation ?
  1.    x2y
  2.    x2-y2
  3.    cosx
  4.    x2 + y2
 Discuss Question
Answer: Option B. -> x2-y2
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1474. In a forced vortex motion, the velocity of flow is________________?
  1.    directly proportional to its radial distance from axis of rotation
  2.    inversely proportional to its radial distance from the axis of rotation
  3.    inversely proportional to the square of its radial distance from the axis of rotation
  4.    directly proportional to the square of its radial distance from the axis of rotation
 Discuss Question
Answer: Option A. -> directly proportional to its radial distance from axis of rotation
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1475. The pitot tube is used to measure________________?
  1.    velocity at stagnation point
  2.    stagnation pressure
  3.    static pressure
  4.    dynamic pressure
 Discuss Question
Answer: Option B. -> stagnation pressure
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1476. If velocity is zero over l/3rd of a cross-section and is uniform over remaining 2/3rd of the cross-section, then the correction factor for kinetic energy is__________________?
  1.    4/3
  2.    3/2
  3.    9/4
  4.    27/8
 Discuss Question
Answer: Option C. -> 9/4
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1477. Equation of continuity is based on the principle of conservation of_________________?
  1.    mass
  2.    energy
  3.    momentum
  4.    none of the above
 Discuss Question
Answer: Option A. -> mass
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1478. Select the incorrect statement_________?
  1.    The pressure intensity at vena contracta is atmospheric
  2.    Contraction is least at vena contracta
  3.    Stream lines are parallel throughout the jet at vena contracta
  4.    Coefficient of contraction is always less than one
 Discuss Question
Answer: Option C. -> Stream lines are parallel throughout the jet at vena contracta
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1479. When the velocity distribution is uniform over the cross-section, the correction factor for momentum is__________________?
  1.    0
  2.    1
  3.    4/3
  4.    2
 Discuss Question
Answer: Option B. -> 1
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1480. Flow at constant rate through a tapering pipe is________________?
1. steady flow
2. uniform flow
3. unsteady flow
4. non-uniform flow
The correct answer is?
  1.    (1) and (2)
  2.    (1)and(iv)
  3.    (2) and (3)
  4.    (2) and (4)
 Discuss Question
Answer: Option B. -> (1)and(iv)
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

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