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Question 1. For perfect intercooling in a three stage compressor
  1.    p₂/p₁ = p₃/p₂ = p₄/p₃
  2.    p₃/p₁ = p₄/p₂
  3.    p₁ p₂ = p₃ p₄
  4.    p₁ p₃ = p₂ p₄
Answer: Option A

Question 2. For perfect intercooling in a two stage compressor
  1.    p₂/p₁ = p₃/p₂
  2.    p₁/p₃ = p₂/p₁
  3.    p₁ = p3
  4.    p₁ = p₂ p3
Answer: Option A

Question 3. The weight per horse power ratio for gas in Turbine as compared to I.C. engine and steam turbine is
  1.    Same
  2.    Higher
  3.    Lower
  4.    None of these
Answer: Option C

Question 4. The inter-cooler pressure, for minimum work required, for a two stage reciprocating air compressor, is given by (where p₁ = Intake pressure of air, p₂ = Inter-cooler pressure, and p₃ = Delivery pressure of air)
  1.    p₂ = p₁ × p₃
  2.    p₂ = p₁/p₃
  3.    p₂ = p₁ × p₂
  4.    p₂ = p₃/p₁
Answer: Option C

Question 5. The volume of air delivered in a medium capacity air compressor per unit time is
  1.    0.1 to 1.2 m³/s
  2.    0.15 to 5 m³/s
  3.    Above 5 m³/s
  4.    None of these
Answer: Option B

Question 6. The efficiency of jet engine is
  1.    Lower at low speed
  2.    Higher at high altitudes
  3.    Same at all altitudes
  4.    Higher at high speed
Answer: Option B