2) The indicated mean effective pressure is the of the brake mean effective pressure and the friction mean effective pressure. O sum O difference O product O ratio 3) Which ONE of the following statements is TRUE about specific power output? O It increases with increase in both BMEP and mean piston speed. O It decreases with increase in both BMEP and mean piston speed. O It increases with increase in BMEP and decrease in mean piston speed. O It increases with decrease in BMEP and increase in mean piston speed. 4) Which ONE of the following statements is TRUE about a lean fuel-air mixture? O Its equivalence ratio and excess air ratio are both greater than one. O Its equivalence ratio and excess air ratio are both lower than one. O Its equivalence ratio is lesser than one and its excess air ratio is greater than one. O Its equivalence ratio is greater than one and its excess air ratio is lesser than one.
2) The indicated mean effective pressure is the of the brake mean effective pressure and the friction mean effective pressure. O sum O difference O product O ratio 3) Which ONE of the following statements is TRUE about specific power output? O It increases with increase in both BMEP and mean piston speed. O It decreases with increase in both BMEP and mean piston speed. O It increases with increase in BMEP and decrease in mean piston speed. O It increases with decrease in BMEP and increase in mean piston speed. 4) Which ONE of the following statements is TRUE about a lean fuel-air mixture? O Its equivalence ratio and excess air ratio are both greater than one. O Its equivalence ratio and excess air ratio are both lower than one. O Its equivalence ratio is lesser than one and its excess air ratio is greater than one. O Its equivalence ratio is greater than one and its excess air ratio is lesser than one.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Transcribed Image Text:2) The indicated mean effective pressure is the
of the brake mean effective pressure and the friction mean effective pressure.
O sum
O difference
O product
O ratio
3) Which ONE of the following statements is TRUE about specific power output?
O It increases with increase in both BMEP and mean piston speed.
O It decreases with increase in both BMEP and mean piston speed.
O It increases with increase in BMEP and decrease in mean piston speed.
O It increases with decrease in BMEP and increase in mean piston speed.
4) Which ONE of the following statements is TRUE about a lean fuel-air mixture?
O Its equivalence ratio and excess air ratio are both greater than one.
O Its equivalence ratio and excess air ratio are both lower than one.
O Its equivalence ratio is lesser than one and its excess air ratio is greater than one.
O Its equivalence ratio is greater than one and its excess air ratio is lesser than one.
5) Which one of the following increases the indicated mean effective pressure of the air standard Otto Cycle?
O Increasing both the pressure at the start of compression and the pressure ratio.
O Decreasing both the pressure at the start of compression and the pressure ratio.
O Increasing the pressure at the start of compression and decreasing the pressure ratio.
O Decreasing the pressure at the start of compression and increasing the pressure ratio.
6) Which ONE of the following is NOT a benefit of supercharging?
O The density of intake air increases.
O The mechanical load on engine components increases.
O The mean effective pressure increases.
O The engine thermal efficiency increases.
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