CITS Mechanic Diesel Previous Year Question Paper

CITS Mechanic Diesel Previous Year Question Paper

CITS की परीक्षा के लिए Mechanic Diesel से संबंधित काफी महत्वपूर्ण प्रश्न पूछे जाते हैं इसीलिए CITS परीक्षा की तैयारी करने वाले सभी उम्मीदवारों को Mechanic Diesel से संबंधित जानकारी होना बहुत ही जरूरी है. CITS की तैयारी करने के लिए हमारी वेबसाइट पर आपको ऑनलाइन फ्री टेस्ट दिए जाएंगे और इस परीक्षा के कुछ महत्वपूर्ण नोट्स प्रश्न उत्तर के रूप में दिए जाएंगे आज के इस पोस्ट में भी आपको CITS से संबंधित काफी महत्वपूर्ण प्रश्न और उनके उत्तर नीचे दिए गए हैं जो कि पहले परीक्षाओं में पूछे जा चुके हैं लेकिन यहां पर हमने सभी प्रशन एक लाइन में दिए हैं ताकि है आपको आसानी से याद हो सके.

Q 1) Modern engines use pump-operated cooling system. This is because the thermosyphon system …..
A) Cannot be pressurized
B) Overcools the cylinder head and valves
C) Requires a large quantity of water
D) Does not allow a thermostat to be fitted

Q 2) The thermostat most commonly used in cooling system of modern engines is … /
A) Wax-pellet type
B) Bi-metal type
C) Bellows type
D) Alcohol type

Q 3) A noise produced in the cylinder of a diesel engine during combustion, usually when the fuel has low ignition quality, is called ….
A) Fuel burst
B) Fuel explosion
C) Fuel knock
D) Fuel thrust

Q 4) In C.I. Engine, the fuel is injected when the piston …………
A) Is approaching t.d.c. at the end of compression stroke
B) Has just passed t.d.c. at the start of power stroke
C) Is approaching b.d.c. at the end of induction stroke
D) Has just passed b.d.c. at the start of compression stroke

Q 5) A glow plug is …………..
A) A compression device
B) A decompression device
C) Fitted in the inlet manifold
D) Screwed in the combustion chamber

Q 6) The part of the diesel engine fuel tank which minimizes slushing of fuel due to movement inside the tank, is ………
A) Filler cap
B) Filler neck
C) Baffles
D) Drain plug

Q 7) What is the system of fuel injection shown in figure given below?
A) Individual pump system
B) Common rail direct injection system
C) Distributor system
D) Unit injector system

Q 8) The special feature of pintle type nozzle is that it ……………
A) Has a single hole।
B) Has an extended stem to form a pin
C) Is suitable for cold weather
D) Is designed for easy starting

Q 9) A governor is a ………………
A) Temperature-sensitive device
B) Pressure-sensitive device
C) Speed-sensitive device
D) Vacuum-sensitive device

Q 10) Which of these statements is NOT true about turbocharger?
A) It is turbine driven
B) It is forced induction device
C) It increases engine efficiency and power output
D) It reduces quantity of air admitted in combustion chamber

Q 11) Compression ratio of diesel engine can be as high as …………….
A) 9:01
B) 12:01
C) 14:01
D) 22:01

Q 12) Figure given below shows a …………….
A) 2 – stroke diesel engine
B) 4 – stroke diesel engine
C) 2 – stroke petrol engine
D) 4 – stroke petrol engine

Q 13) Which of these is NOT the function of exhaust system of diesel engine?
A) To deliver exhaust gases to the atmosphere
B) To reduce noise
C) To quench sparks
D) To cool the engine cylinder

Q 14) These are the parts of diesel engine exhaust system, except ………….
A) Valves
B) Muffler
C) Silencer
D) Tail pipe

Q 15) What can be used to recover heat from exhaust gases?
A) Muffler
B) Heat exchanger
C) Tail pipe
D) Manifold

Q 16) What makes starting of diesel engine difficult in cold weather?
A) High oil viscosity
B) Fuel injected is cold
C) Much of the heat of compression stroke is absorbed by cold cylinder block
D) None of thes

Q 17) Diesel cycle is also known as ……………
A) Constant volume cycle
B) Constant pressure cycle
C) Constant temperature cycle
D) Constant head cycle

Q 18) Seiton under 5S, reduces all these, except …………..
A) Productivity
B) Excess motion
C) Human frustration
D) Time wasted in searching

Q 19) What phase of 5S is concerned with colour coding of tools ?
A) Sort
B) Set in Order
C) Shine
D) Standardize

Q 20) The tool used to show movement of product is ……
A) Histogram
B) Control Chart
C) Process Flow Chart
D) Scatter Diagram

Q 21) Which instrument can be used to check radial clearance
A) Dial indicator
B) Deviation gauge
C) Feeler gauge
D) Wire gauge

Q 22) What is used to remove carbon deposits from valve seats and combustion chamber s
surroundings?
A) Wing nut
B) Paint brush
C) Socket screw
D) Wire brush

Q 23) The lowest portion of piston is called as …………..
A) Lobe
B) Head
C) Skirt
D) Groove

Q 24) Piston rings are generally made of ……..
A) Cast iron
B) Brass
C) Copper
D) Aluminium

Q 25) What is mounted on the rear end of the crankshaft?
A) Timing sprocket
B) Flywheel
C) Vibration damper
D) Counterweight

Q 26) If crankshaft and camshaft are very close to each other, then the camshaft drive mechanism used is ….
A) Gear drive
B) Chain drive
C) Belt drive
D) Sprocket drive

Q 27) The coefficient of friction is written as
A) µ
B) γ
C) λ
D) ω

Q 28) Which type of oil pump is most commonly used for engine lubrication?
A) Gear type pump
B) Scavenging type pump
C) Vane type pump
D) Plunger type pump

Q 29) An opening is provided in engine lubrication system to the outside air outside air so
as to prevent building up of excess pressure in the crankcase. It is called …….
A) Air inhaler
B) Air breather
C) Air inducer
D) Air primer

Q 30) The purpose of thermostat in engine cooling system is to keep the engine …
A) Cool
B) Warm
C) Hot
D) At normal operating temperature quickly

Q 31) What does the following figure show?
A) Valve movement diagram
B) Valve timing diagram
C) Valve setting diagram
D) Valve opening diagram

Q 32) The function of the capacitor in a coil-ignition system is to ………
A) Transform the voltage
B) Act as mechanical switch
C) Prevent arcing at the contact-breaker
D) Direct the current to the appropriate plug

Q 33) In order to keep valves in sync with the pistons, a timing belt or chain connects /
A) Flywheel to the crankshaft
B) Crankshaft to the camshaft
C) Cylinder head to camshaft
D) Cylinder head to crankshaft

Q 34) The specific gravity of electrolyte of a battery is measured by ………….
A) Hydrometer
B) Pyrometer
C) Odometer
D) Techometer

Q 35) An engine should not be operated in a closed garage because ………..
A) Exhaust gas is poisonous
B) Of risk of an explosion
C) The engine receives incorrect mixture
D) The engine is damaged if gas cannot escape

Q 36) Diesel fuel, compared to petrol is …………….
A) Less difficult to ignite
B) More difficult to ignite
C) Just about the same difficult to ignite
ई
D) More or less difficult to ignite, it depends

Q 37) If the temperature of intake air in engine cylinder is increased, it efficiency will

A) Increase
B) Decrease
C) Remain the same
D) Increase initially and then decrease

Q 38) …………. Sensor senses the amount of oxygen in the engine exhaust and calculates air
fuel ratio. 
A) Engine temperature
B) Exhaust gas
C) Air flow
D) Air inlet temperature

Q 39) The ……….. Sensor monitors mass or volume of air flow into the intake manifold and adjusts the quantity of fuel. 
A) Engine temperature
B) Exhaust gas
C) Air flow
D) Air inlet temperature

Q 40) In case of any failure, the driver is informed through MIL lamp on dashboard. What
is MIL?
A) Material Indication Lamp
B) Measured Indication Lamp
C) Malfunctioning Indicator Lamp
D) Mean Indicator Lamp

Answer

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