Home⇒ Engineering⇒
Some important examples
1-Dont try to cram or spend more time here just read it fast and cover syllabus then practice MCQ's cheptor of same topic to check your progress. . |
2-Wrong options are also given but dont concentrate there, Right answer is in bold format. |
Q1 ⇒ In commercial vehicle layouts engine is located forward, rear or under floor mainly to Better weight distribution [other wrong options] [Discuss in forum] ![]() ![]() Better utilization of space Increase fuel economy Reduce the weight of chassis |
Q2 ⇒ The type of air cycle used in diesel engine is called Diesel cycle [other wrong options] [Discuss in forum] ![]() ![]() Otto cycle Carnot cycle Rankine cycle |
Q3 ⇒ During suction stroke the pressure inside the cylinder is Below atmospheric pressure [other wrong options] [Discuss in forum] ![]() ![]() Equal to atmospheric pressure Above atmospheric pressure Above or below atmospheric pressure |
Q4 ⇒ During compression stroke the air is compressed according to Adiabatic process [other wrong options] [Discuss in forum] ![]() ![]() Isothermal process Hyperbolic process Constant pressure process |
Q5 ⇒ The heat is added in the cycle at Approximately constant pressure and constant volume [other wrong options] [Discuss in forum] ![]() ![]() Constant pressure Constant volume |
Q6 ⇒ The fuel injected when pressure in the cylinder reaches the point ........... on the curve 3 [other wrong options] [Discuss in forum] ![]() ![]() 1 2 4 |
Q7 ⇒ The crankcase scavenging the the crankcase or underside of the piston acts as An air compressor [other wrong options] [Discuss in forum] ![]() ![]() A blower A ventilator A breather |
Q8 ⇒ The two-stroke engine has valve ports in the Cylinder walls [other wrong options] [Discuss in forum] ![]() ![]() Pistons Piston rings |
Q9 ⇒ The temperature of the piston will be more at The crown of the piston [other wrong options] [Discuss in forum] ![]() ![]() The piston walls The skirt of the piston The piston pin |
Q10 ⇒ Connecting rods are generally of the following from Forged I section steel [other wrong options] [Discuss in forum] ![]() ![]() Forged round section steel Cast steel triangular section Forged square section steel |
Q11 ⇒ For petrol engines the nominal compression ratio will vary between 7.5 to 8.5:1 [other wrong options] [Discuss in forum] ![]() ![]() 1 to 2:1 18 to 21:1 1 to 5:1 |
Q12 ⇒ For diesel engines the nominal compression ratio is from 17 to 21:1 [other wrong options] [Discuss in forum] ![]() ![]() 7.5 to 8.5:1 30 to 40:1 1 to 5:1 |
Q13 ⇒ One of the major causes of FHP in an engine is Piston-ring friction [other wrong options] [Discuss in forum] ![]() ![]() High speed High volumetric efficiency |
Q14 ⇒ Engine torque is highest at Intermediate speed [other wrong options] [Discuss in forum] ![]() ![]() Low speed High speed |
Q15 ⇒ The maximum pressure of air fuel mixture at the end of compression in petrol engines varies from 10-30 Kg/cm2 b. 30-100 Kg/cm2 [other wrong options] [Discuss in forum] ![]() ![]() 6-10 Kg/cm2 100-1000 Kg/cm2 |
Q16 ⇒ When we lift a 10 kg weight, 3 metre we would be doing 30 m kg of work [other wrong options] [Discuss in forum] ![]() ![]() 300 m kg of work 3 m kg of work |
Q17 ⇒ The maximum pressure of air at the end of compression in diesel engines is about 30 Kg/cm2 [other wrong options] [Discuss in forum] ![]() ![]() 10 Kg/cm2 100 Kg/cm2 300 Kg/cm2 |
Q18 ⇒ As the number of cylinders in multi cylinder engines increases the power to weight ratio ......... Increases [other wrong options] [Discuss in forum] ![]() ![]() Remains the same Becomes zero Decreases |
Q19 ⇒ The type of friction generally present in an automotive engine is Viscous friction [other wrong options] [Discuss in forum] ![]() ![]() Greasy friction Dry friction |
Q20 ⇒ The fit of the piston to the cylinder is measured at the Piston head [other wrong options] [Discuss in forum] ![]() ![]() Piston skirt Point of minimum diameter |
Or |