Which of the following factor will not assist in improving thermal efficiency of a CI engine (A) fine atomization and even distribution of fuel (B) minimum heat loss during combustion (C) clear exhaust (D) high surface to volume ratio 0 Mechanical Engineering MCQs Author: MCQs Master Report : If answer is wrong. May 17, 2022
Endurance test for IC engine is conducted for (A) 100hrs (B) 200 hrs (C) 400 hrs (D) 500 hrs 0 Mechanical Engineering MCQs Author: MCQs Master Report : If answer is wrong. May 17, 2022
If performance of SI engine of different manufacturer having different capacities size and systems are to be compared, the common parameter would be (A) engine cylinder diameter (B) b.h.p. (C) speed (D) mep 0 Mechanical Engineering MCQs Author: MCQs Master Report : If answer is wrong. May 17, 2022
The brake thermal efficiency of SI engine is in the range of (A) 35-60% (B) 25-35 (C) 60-80 (D) none of the above 0 Mechanical Engineering MCQs Author: MCQs Master Report : If answer is wrong. May 17, 2022
Indicated power is directly proportional to (A) air consumption (B) torque (C) cylinder peak pressure (D) none of the above 0 Mechanical Engineering MCQs Author: MCQs Master Report : If answer is wrong. May 17, 2022
The spark timing and combustion rate should be such that (A) one half of the total pressure occurs at tdc (B) ignition delay is reduced (C) peak pressure occurs at tdc (D) none of the above 0 Mechanical Engineering MCQs Author: MCQs Master Report : If answer is wrong. May 17, 2022
Thermal efficiency varies (A) inversely as specific fuel consumption (B) directly as specific fuel consumption (C) as square as specific fuel consumption (D) as root as specific fuel consumption 0 Mechanical Engineering MCQs Author: MCQs Master Report : If answer is wrong. May 17, 2022
Volumetric efficiency is a measure of (A) power of the engine (B) speed of the engine (C) breathing capacity of the engine (D) pressure rise in the cylinder 0 Mechanical Engineering MCQs Author: MCQs Master Report : If answer is wrong. May 17, 2022
Mechanical efficiency is the ratio of (A) frictional power to brake power (B) frictional power to indicated power (C) brake power to indicated power (D) indicated power to frictional power 0 Mechanical Engineering MCQs Author: MCQs Master Report : If answer is wrong. May 17, 2022
If n is the rpm, number of power strokes per minute in a two stroke engine is (A) n/2 (B) n (C) 2n (D) 4n 0 Mechanical Engineering MCQs Author: MCQs Master Report : If answer is wrong. May 17, 2022
