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MCQs

Total Questions : 69 | Page 4 of 7 pages
Question 31. The comparison of two systems made on the basic of their temperature, specific heat and heat flus is known as
  1.    Dynamic similarity
  2.    Kinematic similarity
  3.    Thermal similarity
  4.    Geometrical similarity
 Discuss Question
Answer: Option C. -> Thermal similarity
Answer: (c).Thermal similarity
Question 32. A similarity in thermal quantities is achieved when
  1.    Nusselt number is same for both the fields
  2.    Nusselt number is different for both the fields
  3.    Prandtl number is same for both the fields
  4.    Prandtl number is different for both the fields
 Discuss Question
Answer: Option C. -> Prandtl number is same for both the fields
Answer: (c).Prandtl number is same for both the fields
Question 33. The similarity of masses and forces of the corresponding particles of flow is known as
  1.    Kinematic similarity
  2.    Dynamic similarity
  3.    Geometrical similarity
  4.    Thermal similarity
 Discuss Question
Answer: Option B. -> Dynamic similarity
Answer: (b).Dynamic similarity
Question 34. The similarity of motion is known as
  1.    Thermal similarity
  2.    Dynamic similarity
  3.    Geometrical similarity
  4.    Kinematic similarity
 Discuss Question
Answer: Option D. -> Kinematic similarity
Answer: (d).Kinematic similarity
Question 35. The similarity of shape and form is known as
  1.    Geometrical similarity
  2.    Thermal similarity
  3.    Geometrical similarity
  4.    Kinematic similarity
 Discuss Question
Answer: Option C. -> Geometrical similarity
Answer: (c).Geometrical similarity
Question 36. The product of buoyant force and inertia force to the square of the viscous force is known as
  1.    Stanton number
  2.    Grashof number
  3.    Fourier number
  4.    Peclet number
 Discuss Question
Answer: Option B. -> Grashof number
Answer: (b).Grashof number
Question 37. The ratio of heat transfer coefficient to the flow of heat per unit temperature rise due to the velocity of the fluid is known as
  1.    Fourier number
  2.    Grashof number
  3.    Peclet number
  4.    Stanton number
 Discuss Question
Answer: Option D. -> Stanton number
Answer: (d).Stanton number
Question 38. Which number establishes the relation between convective film coefficient, thermal conductivity of the fluid and a significant length parameter?
  1.    Nusselt number
  2.    Stanton number
  3.    Peclet number
  4.    Fourier number
 Discuss Question
Answer: Option A. -> Nusselt number
Answer: (a).Nusselt number
Question 39. Which number indicates the relative ability of the fluid to diffuse momentum and internal energy by molecular mechanisms?
  1.    Nusselt number
  2.    Prandtl number
  3.    Peclet number
  4.    Stanton number
 Discuss Question
Answer: Option B. -> Prandtl number
Answer: (b).Prandtl number
Question 40. What is the dimension of density?
  1.    M L¯³ T
  2.    M L¯³
  3.    M L¯³ T²
  4.    M L ¯²
 Discuss Question
Answer: Option B. -> M L¯³
Answer: M L -3

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