Engine Performances - 2 MCQ

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• Find the brake specific fuel consumption of an engine having mass flow rate 6 kg/hr, indicated power 30 Hp and friction power 5 Hp.
  ক

  0.321 kg/kw-hr

  খ

  0.5 kg/kw-hr

  গ

  0.66 kg/kw-hr

  ঘ

  0.88 kg/kw-hr
• Find the indicated specific fuel consumption of an engine having mass flow rate 5 kg/hr and indicated power 30 Hp.
  ক

  0.2235 kg/kw-hour

  খ

  0.009 kg/kw-hour

  গ

  1.023 kg/kw-hour

  ঘ

  2.003 kg/kw-hour
• How to calculate the fuel consumption of an engine in kg/hr theoretically?
  ক

  (Mf = Vf * ρf * 3600) / ∆t

  খ

  (Mf = Vf * ρf)

  গ

  (Mf = Vf / ∆t)

  ঘ

  (Mf = L * A)
• Find the friction mean effective pressure of an engine having brake mean effective pressure 25 Hp and indicated mean effective pressure 30 Hp.
  ক

  5.0 Hp

  খ

  5.5 Hp

  গ

  5.3 Hp

  ঘ

  5.4 Hp
• Find the brake power of a four-stroke 4 cylinder engine having brake mean effective pressure 9 Kg/cm2, piston displacement 1178.09 cm3 and the crankshaft of the engine rotates at 2000 rpm.
  ক

  94 Hp

  খ

  96 Hp

  গ

  97 Hp

  ঘ

  98 Hp
• What is the purpose of calculation of specific output of an engine?
  ক

  Engine performance

  খ

  Engine input

  গ

  Engine torque

  ঘ

  Engine pressure
• Find the specific output of a tractor engine of stroke length 17 cm, bore 15 cm with brake power 30 Hp.
  ক

  9 Hp/l

  খ

  12 Hp/l

  গ

  14 Hp/l

  ঘ

  8 Hp/l
• Find indicated power of a two-cylinder four-stroke engine with mean effective pressure of 686700 N/m2, stroke length 15 cm, bore 12.5 cm and rpm as 1200.
  ক

  33 Hp

  খ

  32 Hp

  গ

  32.5 Hp

  ঘ

  35 Hp
• Find the brake horsepower of a tractor engine having engine torque 170 Nm, crankshaft rotation 2500rpm.
  ক

  60

  খ

  61

  গ

  62

  ঘ

  63
• Find the torque of the engine having the tangential force of 569.5 Kg-m/s2 and crank radius of 30cm.
  ক

  170.8 Nm

  খ

  171.8 Nm

  গ

  173 Nm

  ঘ

  172 Nm
• How to calculate the brake power of an engine in watts?
  ক

  2πNT / 60

  খ

  2πNT

  গ

  2 * 103 * πNT / 60

  ঘ

  πNT / 60