Chemical Engineering Basics MCQs with answers Page - 7

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Q. Pick out the wrong statement. If the net positive suction head (NPSH) requirement of a pump is not satisfied, then

  • (A) It will deliver low discharge of liquid
  • (B) Its efficiency will not be affected
  • (C) It will not develop sufficient head to raise water
  • (D) It will be cavitated

A

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Q. For the same heat input & compression ratio, efficiency of Otto cycle is higher than that of diesel cycle, because in Otto cycle.

  • (A) Heat rejection is lower
  • (B) Expansion & compression are isentropic
  • (C) Maximum temperature is higher
  • (D) Combustion is at constant volume

A

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Q. __________ forces do not act in case of fluids.

  • (A) Vibratory
  • (B) Centrifugal
  • (C) Elastic
  • (D) Tensile

A

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Q. Powder metallurgy process does not make metal powder by

  • (A) Atomisation
  • (B) Hammering
  • (C) Electrolytic deposition
  • (D) Grinding/milling

A

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Q. Circulation of liquid metal (i.e. molten sodium) in a liquid metal cooled nuclear reactor is done by a/an __________ pump.

  • (A) Electromagnetic
  • (B) Diaphragm
  • (C) Reciprocating
  • (D) Axial flow

A

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Q. The ratio of coil diameter to wire diameter of a spring is called the spring

  • (A) Index
  • (B) Deflection
  • (C) Form co-efficient
  • (D) None of these

A

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Q. Pick out the wrong statement about a fast breeder reactor.

  • (A) Produces more fuel than it consumes
  • (B) Requires highly enriched fuel
  • (C) Converts fertile fuel into fissile fuel
  • (D) Uses molten sodium as moderator

A

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Q. Coke is added in the blast furnace to

  • (A) Reduce & melt the iron ore
  • (B) Increase the fluidity of slag
  • (C) Remove sulphur & phosphorus from molten metal
  • (D) None of these

A

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Q. Castability of aluminium is increased by the addition of __________ in it.

  • (A) Manganese
  • (B) Silicon
  • (C) Lead
  • (D) Bismuth

A

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Q. Speed of a submarine in deep sea & that of an aeroplane is measured by a/an

  • (A) Stroboscope
  • (B) Rotameter
  • (C) Hot wire anemometer
  • (D) Pitot tube

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