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MCQs

Total Questions : 5013 | Page 59 of 502 pages
Question 581. Venturimeter is used to measure the flow rate of fluids in pipes, when the pipe is in __________ position.
  1.    Horizontal
  2.    Vertical
  3.    Inclined
  4.    Any
 Discuss Question
Answer: Option D. -> Any
Question 582. Main alloying element in Elinvar used in precision instruments, hair springs for watches etc. is
  1.    Chromium
  2.    Nickel
  3.    Zinc
  4.    Aluminium
 Discuss Question
Answer: Option B. -> Nickel
Question 583. An example of unsteady non uniform flow is the flow of liquid under pressure through a
  1.    Tapering pipe at constant flow rate
  2.    Tapering pipe at either decreasing or increasing flow rate
  3.    Long pipeline of constant diameter
  4.    None of these
 Discuss Question
Answer: Option B. -> Tapering pipe at either decreasing or increasing flow rate
Question 584. Annealing ofwhite cast iron produces __________ iron.
  1.    Grey
  2.    Nodular
  3.    Malleable
  4.    Spheroidal
 Discuss Question
Answer: Option C. -> Malleable
Question 585. Which of the following if present in iron ore, enhances its value?
  1.    Alumina
  2.    Alkali oxide
  3.    Lime & Magnesia
  4.    None of these
 Discuss Question
Answer: Option C. -> Lime & Magnesia
Question 586. __________ of grey cast iron produces white cast iron.
  1.    Tempering
  2.    Rapid heating
  3.    Rapid cooling
  4.    Slow cooling
 Discuss Question
Answer: Option B. -> Rapid heating
Question 587. Which of the following pairs is not correctly matched?
  1.    Uranium - 233 : Fertile material
  2.    Bindingenergy : Mass defect
  3.    Scattering : Absorption cross-section
  4.    Number of nucleons : Mass number
 Discuss Question
Answer: Option A. -> Uranium - 233 : Fertile material
Question 588. Speisses is a mixture of the following:
  1.    Arsenides of heavy metals
  2.    Antimonides of heavy metals
  3.    Arsenides & antimonides of heavy metals
  4.    Iron, cobalt and nickel
 Discuss Question
Answer: Option A. -> Arsenides of heavy metals
Question 589. LVDT used for displacement measurement is a/an __________ transducer.
  1.    Passive
  2.    Active
  3.    Capacitive
  4.    None of these
 Discuss Question
Answer: Option A. -> Passive
Question 590. The escape velocity of a body on earth which is independent of its mass is about __________ km/second.
  1.    3
  2.    7
  3.    11
  4.    15
 Discuss Question
Answer: Option C. -> 11

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