Mock Test - Set 06
Today, all competitive exams are Multiple Choice Questions(MCQ) based examination system and the main factor is to answer each question in a prescribed time. So, practice as much as possible before the original test you are going to face.
Total number of Multiple Choice Question (MCQ) is 15 and time allotted for each question is 30 seconds. After the allotted time, the question will be marked as un-attempt.
Next Mock Tests:
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01. In the opposed piston diesel engine, the combustion chamber is located
(A) Above the piston
(B) Below the piston
(C) Between the pistons
(D) There is no such criterion
Answer: Option C
02. Supercharging is the process of
(A) Supplying the intake of an engine with air at a density greater than the density of the surrounding atmosphere
(B) Providing forced cooling air
(C) Injecting excess fuel for raising more loads
(D) Supplying compressed air to remove combustion products fully
Answer: Option A
03. The brake warning light warns the driver of
(A) Water in the master cylinder
(B) Air in the hydraulic system
(C) Failure of the primary or secondary circuit of hydraulic system
(D) Power brake failure
Answer: Option C
04. The inlet valve of a four stroke cycle internal combustion engine remains open for
(A) 130°
(B) 180°
(C) 230°
(D) 270°
Answer: Option C
05. Highest useful compression ratio (HUCR) is the highest compression ratio at which the
(A) Engine can run
(B) Engine gives maximum output
(C) Engine is most efficient
(D) Fuel can be used in a test engine without knocking
Answer: Option D
06. The reason for supercharging in any engine is to
(A) Increase efficiency
(B) Increase power
(C) Reduce weight and bulk for a given output
(D) Effect fuel economy
Answer: Option C
07. For the same maximum pressure and temperature
(A) Diesel cycle is more efficient than Otto cycle
(B) Otto cycle is more efficient than Diesel cycle
(C) Both Otto cycle and Diesel cycle are equally efficient
(D) None of the above
Answer: Option A
08. The knock in diesel engine occurs due to
(A) Instantaneous and rapid burning of the first part of the charge
(B) Instantaneous auto ignition of last part of charge
(C) Delayed burning of the first part of the charge
(D) Reduction of delay period
Answer: Option A
09. The main function of an exhaust muffler is the
(A) Optimization of exhaust efficiency
(B) Reduction of exhaust noise
(C) Reduction of nitrogen oxide in the exhaust gases
(D) Reduction of the exhaust gas volume
Answer: Option B
10. As compared to air standard cycle, in actual working, the effect of variation in specific heats is to
(A) Increase maximum pressure and maximum temperature
(B) Reduce maximum pressure and maximum temperature
(C) Increase maximum pressure and decrease maximum temperature
(D) Decrease maximum pressure and increase maximum temperature
Answer: Option B
11. The characteristic that is enhanced by the use of cylinder sleeves is
(A) Cooling efficiency
(B) Resistance to wear
(C) Lubrication performance
(D) None of these
Answer: Option B
12. A two stroke cycle engine gives ________ the number of power strokes as compared to the four stroke cycle engine, at the same engine speed.
(A) Half
(B) Same
(C) Double
(D) Four times
Answer: Option C
13. The service brakes employed in cars are generally operated
(A) Mechanically
(B) Hydraulically
(C) Pneumatically
(D) None of these
Answer: Option B
14. Fuel oil consumption guarantees for I .C. engine are usually based on
(A) Low heat value of oil
(B) High heat value of oil
(C) Net calorific value of oil
(D) Calorific value of fuel
Answer: Option B
15. The two kinds of piston rings are
(A) Compression and oil control rings
(B) Compression and sliding seal rings
(C) Oil scrapper and oil control rings
(D) Pressure and sealing rings
Answer: Option A
(A) Above the piston
(B) Below the piston
(C) Between the pistons
(D) There is no such criterion
Answer: Option C
02. Supercharging is the process of
(A) Supplying the intake of an engine with air at a density greater than the density of the surrounding atmosphere
(B) Providing forced cooling air
(C) Injecting excess fuel for raising more loads
(D) Supplying compressed air to remove combustion products fully
Answer: Option A
03. The brake warning light warns the driver of
(A) Water in the master cylinder
(B) Air in the hydraulic system
(C) Failure of the primary or secondary circuit of hydraulic system
(D) Power brake failure
Answer: Option C
04. The inlet valve of a four stroke cycle internal combustion engine remains open for
(A) 130°
(B) 180°
(C) 230°
(D) 270°
Answer: Option C
05. Highest useful compression ratio (HUCR) is the highest compression ratio at which the
(A) Engine can run
(B) Engine gives maximum output
(C) Engine is most efficient
(D) Fuel can be used in a test engine without knocking
Answer: Option D
06. The reason for supercharging in any engine is to
(A) Increase efficiency
(B) Increase power
(C) Reduce weight and bulk for a given output
(D) Effect fuel economy
Answer: Option C
07. For the same maximum pressure and temperature
(A) Diesel cycle is more efficient than Otto cycle
(B) Otto cycle is more efficient than Diesel cycle
(C) Both Otto cycle and Diesel cycle are equally efficient
(D) None of the above
Answer: Option A
08. The knock in diesel engine occurs due to
(A) Instantaneous and rapid burning of the first part of the charge
(B) Instantaneous auto ignition of last part of charge
(C) Delayed burning of the first part of the charge
(D) Reduction of delay period
Answer: Option A
09. The main function of an exhaust muffler is the
(A) Optimization of exhaust efficiency
(B) Reduction of exhaust noise
(C) Reduction of nitrogen oxide in the exhaust gases
(D) Reduction of the exhaust gas volume
Answer: Option B
10. As compared to air standard cycle, in actual working, the effect of variation in specific heats is to
(A) Increase maximum pressure and maximum temperature
(B) Reduce maximum pressure and maximum temperature
(C) Increase maximum pressure and decrease maximum temperature
(D) Decrease maximum pressure and increase maximum temperature
Answer: Option B
11. The characteristic that is enhanced by the use of cylinder sleeves is
(A) Cooling efficiency
(B) Resistance to wear
(C) Lubrication performance
(D) None of these
Answer: Option B
12. A two stroke cycle engine gives ________ the number of power strokes as compared to the four stroke cycle engine, at the same engine speed.
(A) Half
(B) Same
(C) Double
(D) Four times
Answer: Option C
13. The service brakes employed in cars are generally operated
(A) Mechanically
(B) Hydraulically
(C) Pneumatically
(D) None of these
Answer: Option B
14. Fuel oil consumption guarantees for I .C. engine are usually based on
(A) Low heat value of oil
(B) High heat value of oil
(C) Net calorific value of oil
(D) Calorific value of fuel
Answer: Option B
15. The two kinds of piston rings are
(A) Compression and oil control rings
(B) Compression and sliding seal rings
(C) Oil scrapper and oil control rings
(D) Pressure and sealing rings
Answer: Option A