Q.1
Which of the following is the correct performance equation for power-producing engines?
  • a) ηV=PD
  • b) ηD=PV
  • c) ηP=VD
  • d) V=ηPD
Q.2
What is the unit of specific fuel consumption?
  • a) kg/kW-sec
  • b) kg/W-hr
  • c) kg/hr
  • d) kg/kW-hr
Q.3
What is the value of specific fuel consumption where the fuel heating is 42,800kJ/kg and power produced iskW-hr?
  • a) 0.135 kg/kW-hr
  • b) 7.43 kg/W-hr
  • c) 1.546 kg/kW-hr
  • d) 7.43 kg/kW-hr
Q.4
Specific air range is maximum when the aircraft is flying at minimum drag speed.
  • a) True
  • b) False
Q.5
Specific endurance is maximum when the aircraft is flying at minimum drag speed.
  • a) True
  • b) False
Q.6
What is the value of specific air range where the lift to drag ratio isweight is 50000N, efficiency isand specific fuel consumption is 7.kg/kW-hr?
  • a) 3000km
  • b) 4000 km
  • c) 1000km
  • d) 5000km
Q.7
What is the value of specific endurance where the lift to drag ratio isweight is 50000N, efficiency is, velocity is 250m/s and specific fuel consumption is 7.kg/kW-hr?
  • a) 30hr
  • b) 57.6hr
  • c) 10hr
  • d) 50hr
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