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MCQs

Total Questions : 5013 | Page 63 of 502 pages
Question 621. Pick out the wrong statement.
  1.    The equivalent stiffness of two springs (of equal stiffness
  2.    For a helical spring, deflection is proportional to D³ (D = mean coil diameter) or d⁴ (d = wire diameter)
  3.    Crushing load or columns is less than the buckling load
  4.    Modulus of resilience is proportional to ( stress at elastic limit)2
 Discuss Question
Answer: Option C. -> Crushing load or columns is less than the buckling load
Question 622. Boiler tube size is specified by its thickness and __________ diameter.
  1.    Outside
  2.    Inside
  3.    Mean
  4.    None of these
 Discuss Question
Answer: Option A. -> Outside
Question 623. Break even point represents the condition, when the company runs under no profit no loss condition. In break even analysis, total cost comprises of fixed cost
  1.    Only
  2.    Plus variable cost
  3.    Plus overhead cost
  4.    Plus selling expenses
 Discuss Question
Answer: Option B. -> Plus variable cost
Question 624. Direct conversion of thermal energy to electrical energy is facilitated by the
  1.    Fuel cells
  2.    Photo voltaic cell
  3.    Magneto hydrodynamic generator
  4.    None of these
 Discuss Question
Answer: Option C. -> Magneto hydrodynamic generator
Question 625. Which of the following approaches the ideal gas behaviour most closely?
  1.    Wet steam
  2.    Saturated steam
  3.    Superheated steam
  4.    Saturated water
 Discuss Question
Answer: Option C. -> Superheated steam
Question 626. Heat treatment of steel is done mainly to change its
  1.    Mechanical properties
  2.    Physical properties
  3.    Chemical composition
  4.    All of the above
 Discuss Question
Answer: Option A. -> Mechanical properties
Question 627. Fire on fuel oil lines can be extinguished by
  1.    Foam
  2.    Steam
  3.    Water
  4.    Carbon dioxide
 Discuss Question
Answer: Option A. -> Foam
Question 628. __________ property of steel increases by addition of large amount of silicon in it.
  1.    Mechanical
  2.    Machining
  3.    Magnetic
  4.    Refractory
 Discuss Question
Answer: Option C. -> Magnetic
Question 629. LASER
  1.    Stands for Light Amplification by Stimulated Emission of Radiation
  2.    Has the same intensity as visible light
  3.    Can't be used for cutting metals
  4.    None of these
 Discuss Question
Answer: Option A. -> Stands for Light Amplification by Stimulated Emission of Radiation
Question 630. Laser is a device to produce
  1.    Gamma rays
  2.    Microwaves
  3.    A beam of white light
  4.    A beam of coherent light
 Discuss Question
Answer: Option D. -> A beam of coherent light

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