A. 0°C
B. – 10°C
C. 10°C
D. less than – 30°C
E. less than – 273°C
Related Mcqs:
- The thermal efficiency of a petrol engine of two stroke with crank case scavenging as compared to four stroke petrol engine with same comperssion ratio will be_____________________?
A. higher
B. lower
C. same
D. depends on size of engine
E. unpredictable. - The self-ignition temperature of diesel oil compared to petrol is_________________?
A. higher
B. lower
C. same
D. depends on quality of fuel
E. unpredictable - Self-ignition temperature of petrol is of the order of___________________?
A. 150°C
B. 240°C
C. 370°C
D. 450°C
E. more than 500°C. - Petrol is distilled at a temperature in range of__________________?
A. 30 – 65°C
B. 65 – 220°C
C. 220-350°C
D. 350-450°C
E. 450-550°C - In petrol engine, increase of cooling water temperature will_________________?
A. increase the knocking tendency
B. decrease the knocking tendecny
C. not affect the knocking tendency
D. increase or decrease knocking tendency depedning on strength and time of spark
E. unpredictable - The pressure and temperature at the end of compression stroke in a petrol engine are of the order of___________________?
A. 4 – 6 kg/cm2 and 200 – 250°C
B. 6 – 12 kg/cm2 and 250 – 350°C
C. 12 – 20 kg/cm2 and 350 – 450°C
D. 20 – 30 kg/cm2 and 450 – 500°C
E. 30 – 40 kg/cm2 and 500 – 700°C - Ignition quailty of petrol is expressed by___________________?
A. octane number
B. cetane number
C. calorific value
D. self ignition temperature
E. distillation temperature - If diesel is fed by mistake in the oil tank of a petrol engien, then engine will________________?
A. give lot of smoke
B. detonate
C. knock
D. not run
E. run for some time and then stop - The termal efficiency of a petrol engine at design load is around_________________?
A. 90%
B. 50%
C. 40%
D. 30%
E. 15%. - Deposition of carbon in petrol engine cylinder would result in increase of__________________?
A. clearance volume
B. swept volume
C. compression ratio
D. volumetric efficiency
E. mean effective pressure
