Skip to main content

IMP MCQ AUTOMOBILE

IMP MCQ AUTOMOBILE

 

 

1.      Aeroplan is not Automobile.

 


2.      Roads and wheels have tractive force.



3.      Road and tyre have Rolling resistance.

4.      Petrol Engine works on Otto cycle.



5.      Diesel engine works on diesel cycle (Combustion: constant pressure).













6.      Power inside the engine known as indicated power.



7.      In squaretype engine stock length and cylinder bore are same.



8.      Compression ratio in petrol engine - 8:1, Diesel engine-15-25:1



9.      Gasket- prevents the gases to leak from joints.



10.   Cylinder block are made from cast iron and aluminium alloy.

11.   Cylinder sleeve made from cast iron.

12.   Cylinder sleeve used to resist wear.



13.   Honing- a cross section hatch pattern



14.   Reconditioning process used to give cylinder bore surface a cross section hatch patter is also known as honing.



15.   Balancer shaft used to reduce the vibration caused by crank shaft rotation.



16.   Stock: IDC to BDC.



17.   Two type of piston ring, 1.compression ring  2. Oil control ring.



18.   Crescend shape cavity on piston head is valve recess.



19.   Connecting road I-section cross section by connect journal.



20.   4 stock engine valve overlap 30.



21.  Petrol vaporised is by property of volatility.

22.   Iso-octane: C8h18

23.   Octan no. petrol: 85-95

24.   Cetane no. od diesel : 45

25.   Cv: 42.7-43.5 (Petrol) Kj/kg

26.   Cv: 42.5 (diesel) Kj/kg

27.   Specific gravity: 0.75 (petrol)

28.   Specific Gravity: 0.85 (Diesel)

29.   Boiling point : 180-360 C (diesel)

30.   Cetane no. of diesel is measured of delay period.

31.   Octan no. CNG: 120

32.   Natural gas compressed in CNG cylinder at 200bar.

33.   N heptane : denotates easily

34.   Rich air-fuel ration- 10:1

35.   Firing order in line IC engine: 1-3-4-2

36.   Firing order opposed cylinder : 1-4-3-2

37.   Diesel engine required bigger flywheel.



38.   Valve tappet clearance measured by : feeler gauge.



39.   Amyl nitrate improves antiknock properties.

40.   Spark plug: 22Kwatts



41.   If spark plug become black means its too rich mixture.



42.   Misfiring – sark plug gap too wide.



43.   Baffle plats prevent splashing.



44.   SAE 80 more viscus.

45.   SAE 80 W-50 is multi grade oil.

46.  anti-freeze: ethylene glycol.



47.   Thermostat – engine worm quickly.



48.   Resonator – reduce intake air noise.



49.   Muffler- reduces exhaust noise.



50.   12 volt car battery have 6 cells.



51.   Battery has sulphuric acid.

52.   Specific gravity in battery checked by hydrometer.



53.   Specific gravity when its full: 1.28

54.   Specific gravity when its half: 1.19

55.   + lead peroxide (pbo2)

56.   -spongy lead (pb)

57.   Discharge – lead sulphate pdso4

58.   Maintenance free battery – lead calcium plate grid.

59.   Tachometer to measure engine RPM.



60.   Co-efficient of friction of clutch: 6-4.

61.   Clutch facing usually attached to plate by brass rivets.

62.   Free pedal in car : 25 mm


mech

63.   Corning different speed in left & right wheel.



64.   2 speed gear box- tractor.

65.   Vulcanising – heating the rubber under pressure.

66.   Bead wire- steel

67.   Camber – tilting vertically by weight.

68.   Caster- direction control

69.   DOT4, DOT3 , DOT4 is higher boiling point.

70.   Crank shaft which rest on block: main journal.

71.   D alembart law depends second law of Newton

p-ma=0

Labels:

Comments

Post a Comment

Popular posts from this blog

10 Gadgets To Survive Working From Home

10 Gadgets To Survive Working From Home Microsoft Surface Book 2 It goes without saying that you're going to want a good PC for working from home. If your home machine isn't quite up to the task of remote work needs—such as videoconferencing and multi-tasking across multiple applications and browser tabs—then you might consider getting a PC with a bit more horsepower than average. Microsoft's Surface Book 2 will have you covered, with its speedy processors and graphics and up to 16 GB of RAM. The laptop also features a detachable display, meaning you can switch into tablet mode—or even the turn the display around and use the keyboard as a stand—for maximal flexibility depending on what your home work setup requires. The notebook also has choices between vibrant 13.5-inch and 15-inch displays.  Synology RT2600ac Router  The next thing that might need an upgrade for your work-from-home setup is your Wi-Fi router—the typical home wireless router j...
Post a Comment
Read more

10 Greatest Inventions of Nikola Tesla

10 Greatest Inventions of Nikola Tesla Nikola Tesla was a man with big ideas, if you couldn’t tell by the 300 patents to his name. Unfortunately, he was way ahead of his time and while a lot of his more elaborate ideas theoretically worked, they never really panned out. Still, while he never received the recognition of his chief rival Thomas Edison, the man was a brilliant inventor who gave the world some amazing and pioneering innovations. Here are some of the most incredible creations of Nikola Tesla. 10. The Tesla Coil The Tesla coil was invented in 1891 and uses two coils, a primary and a secondary, with each coil having its own capacitor. A capacitor, like a battery, stores energy. The coils are connected to a spark gap, which is just open air where the spark can generate, and the result is that the Tesla Coilcan shoot lightning bolts, send electric currents through the body and create electron winds. Tesla developed this innovation because he was ob...
1 comment
Read more

The future of 3D printing will blow your mind...!

Hello friends........! write now the world is moving so fast and everyone wants the solution quickly.  so the new innovation can help in this New technology like 3D printing is making your mind blow. the 3D printer can print anything you want any kind of shape it can print, it does not require lots of processing to complete the product. now  the 3D printer can even print lots of elements like silicon,carbon, iron, aluminum etc. , even though  now 3D printer can print organ,  and different body parts  and it can also working conditions.  even it can scan and print  the replica of it . in just couple  of hours. also NASA is using the parts made by 3D printer.  NASA is using  for maintenance  also so they can print as per the requirements  of brocken parts. 3D printer  Advantages.  1. reduce different processing time. 2. reduce the cost and  process time. 3. diffe...
1 comment
Read more