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MCQs

Total Questions : 69 | Page 3 of 7 pages
Question 21. Which is a full size structure employed in the actual engineering design?
  1.    Proton
  2.    Prototype
  3.    Electron
  4.    Neutron
 Discuss Question
Answer: Option B. -> Prototype
Answer: (b).Prototype
Question 22. Which term refers to the theory and art of predicting prototype conditions from model observations?
  1.    Nusselt number
  2.    Dimensional homogeneity
  3.    Thermal boundary layer
  4.    Similitude
 Discuss Question
Answer: Option D. -> Similitude
Answer: (d).Similitude
Question 23. Geometrically similarity prescribes that the ratio of the corresponding linear dimensions of the two systems are
  1.    Unity
  2.    Same
  3.    Never same
  4.    May be twice
 Discuss Question
Answer: Option B. -> Same
Answer: (b).Same
Question 24. The results obtained from experiments on models can be applied to prototype only if a complete similarity exists between the model and prototype and for that the two systems may be
(i) Geometrically similar
(ii) Kinematically similar
(iii) Dynamically similar
Identify the correct statements
  1.    1 and 2
  2.    2 and 3
  3.    1, 2 and 3
  4.    1 and 3
 Discuss Question
Answer: Option C. -> 1, 2 and 3
Answer: (c).1, 2 and 3
Question 25. Thermal similarity refers to the comparison of two systems made on the basis of their
  1.    Temperature
  2.    Specific heat
  3.    Heat flux
  4.    Length
 Discuss Question
Answer: Option D. -> Length
Answer: (d).Length
Question 26. What is the dimension of heat?
  1.    M L T¯²
  2.    M L² T¯²
  3.    M L² T¯¹
  4.    M L² T
 Discuss Question
Answer: Option B. -> M L² T¯²
Answer: (b).M L² T¯²
Question 27. What is the dimension of dynamic viscosity?
  1.    M L¯¹ T¯¹
  2.    L¯¹ T¯¹
  3.    M L¯² T¯¹
  4.    M L¯¹ T¯²
 Discuss Question
Answer: Option A. -> M L¯¹ T¯¹
Answer: (a).M L¯¹ T¯¹
Question 28. What is the dimension of force?
  1.    M L T¯¹
  2.    L T¯²
  3.    M T¯²
  4.    M L T¯²
 Discuss Question
Answer: Option D. -> M L T¯²
Answer: (d).M L T¯²
Question 29. What is the dimension of energy?
  1.    M L² T¯²
  2.    M L² T¯¹
  3.    M L¹ T¯²
  4.    M L T¯²
 Discuss Question
Answer: Option A. -> M L² T¯²
Answer: (a).M L² T¯²
Question 30. What is the dimension of kinematic viscosity?
  1.    M L²T¯²
  2.    L²T¯²
  3.    L²T -1
  4.    M L²T -1
 Discuss Question
Answer: Option C. -> L²T -1
Answer: (c).L²T -1

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