Q.1
Which are the two types of piston head?
  • a) Cup and flat type
  • b) Cup and cone type
  • c) Cone and bowl type
  • d) Flat and bowl type
Q.2
Piston thickness depends on what criteria?
  • a) Volume for combustion
  • b) Gas pressure
  • c) Aesthetic
  • d) Products of combustion
Q.3
Which are the two criteria for calculating the thickness of the piston head?
  • a) Heat and Strain
  • b) Strain and stress
  • c) Fracture and Strength
  • d) Strength and Heat dissipation
Q.4
Which of the mentioned below is the Held and favary for the thickness of the piston head?
  • a) th=0.032D+1.5
  • b) th=0.032D+1.5d
  • c) th=0.032D+1.5h
  • d) th=0.032V+1.5D
Q.5
Bore diameter is 150mm, calculate the thickness based on Held and favary formula?
  • a) 6.3mm
  • b) 5.7mm
  • c) 6.3mm2
  • d) 5.7mm2
Q.6
Calculate the amount of heat conducted through piston head, when C=0.HCV=47×KJ/Kg, m=0.Kg/Kw/s, BP=8W?
  • a) 4500KJ
  • b) 450KJ
  • c) 470KJ
  • d) 4700KJ
Q.7
Calculate the thickness of the piston head based on head dissipation, given H=5398.k=46.(Tc-Te)=200?
  • a) 45.92mm
  • b) 30.85mm
  • c) 43.3mm
  • d) 35.98mm
Q.8
Calculate the thickness of the piston head by strength criteria, given D=250mm, Pmax=3MPa, σb= 43N/mm2.
  • a) 23.92mm
  • b) 32.85mm
  • c) 43.3mm
  • d) 28.593mm
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