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MCQs

Total Questions : 3147 | Page 314 of 315 pages
Question 3131. For very great pressures, viscosity of moss gases and liquids__________________?
  1.    remains same
  2.    increases
  3.    decreases
  4.    shows erratic behavior
  5.    none of the above
 Discuss Question
Answer: Option D. -> shows erratic behavior
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3132. An object having 10 kg mass weighs 9.81kg on a spring balance. The value of ‘g’ at this place is _________________?
  1.    10m/sec2
  2.    9.81 m/sec2
  3.    10.2/m sec
  4.    9.75 m/sec2
  5.    9 m/sec
 Discuss Question
Answer: Option A. -> 10m/sec2
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3133. The normal stress in a fluid will be constant in all directions at a point only if__________________________?
  1.    it is incompressible
  2.    it has uniform viscosity
  3.    it has zero viscosity
  4.    it is frictionless
  5.    it is at rest
 Discuss Question
Answer: Option E. -> it is at rest
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3134. When the flow parameters at any given instant remain same at every point, then flow is said to be___________________?
  1.    quasi static
  2.    steady state
  3.    laminar
  4.    uniform
  5.    static
 Discuss Question
Answer: Option D. -> uniform
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3135. The property of a fluid which enables it to resist tensile stress is known as___________________?
  1.    compressibility
  2.    surface tension
  3.    cohesion
  4.    adhesion
  5.    viscosity
 Discuss Question
Answer: Option C. -> cohesion
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3136. Density of water is maximum at__________________?
  1.    0°C
  2.    0°K
  3.    4°C
  4.    100°C
  5.    20°C.
 Discuss Question
Answer: Option C. -> 4°C
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3137. Property of a fluid by which its own molecules are attracted is called___________________?
  1.    adhesion
  2.    cohesion
  3.    viscosity
  4.    compressibility
  5.    surface tension
 Discuss Question
Answer: Option B. -> cohesion
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3138. The specific weight of water is 1000 kg/m”_________________?
  1.    at normal pressure of 760 mm
  2.    at 4°C temperature
  3.    at mean sea level
  4.    all the above
  5.    none of the above
 Discuss Question
Answer: Option D. -> all the above
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3139. If no resistance is encountered by displacement, such a substance is known as ___________________?
  1.    fluid
  2.    water
  3.    gas
  4.    perfect solid
  5.    ideal fluid
 Discuss Question
Answer: Option E. -> ideal fluid
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3140. Fluid is a substance that___________________?
  1.    cannot be subjected to shear forces
  2.    always expands until it fills any container
  3.    has the same shear stress.at a point regardless of its motion
  4.    cannot remain at rest under action of any shear force
  5.    flows
 Discuss Question
Answer: Option D. -> cannot remain at rest under action of any shear force
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

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