Maruti Suzuki Machinist Interview Questions and Answers

Q1. Diploma mechanical ac technician experience in 7years
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Q2. Ac related questions ok
Ans. Servicing Gas charging and Installing and full Servicing
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Q3. Ac related questions
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Q4. Gas related questions
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Q5. General service questions
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Q1. Turbo charger And SuperCharger
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Q2. What is the ratio of petrol
Ans. 
The ratio of petrol refers to the proportion of petrol in a mixture or fuel.
• The ratio of petrol is typically expressed as a fraction or percentage.

• For example, a fuel mixture with a petrol ratio of 1:4 means that for every 1 part of petrol, there are 4 parts of other components.

• The petrol ratio can vary depending on the specific fuel blend or application.

• It is important to maintain the correct petrol ratio for optimal ...read more
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Q3. Difference between CRDI And MPFI
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CRDI and MPFI are fuel injection systems used in automobiles. CRDI is used in diesel engines while MPFI is used in petrol engines.
• CRDI stands for Common Rail Direct Injection and MPFI stands for Multi-Point Fuel Injection.

• CRDI injects fuel directly into the engine cylinder while MPFI injects fuel into the intake manifold.

• CRDI is more efficient and provides better fuel economy than MPFI.

• CRDI is used in diesel engines wh...read more
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Q4. How to work TDC to BDC
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To work TDC to BDC, rotate the crankshaft until the piston is at top dead center (TDC) and then rotate it in the direction of engine rotation until it reaches bottom dead center (BDC).
• Locate the timing marks on the crankshaft pulley and the timing cover

• Rotate the crankshaft until the timing mark on the pulley aligns with the TDC mark on the cover

• Rotate the crankshaft in the direction of engine rotation until the timing...read more
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Q1. Type of engine, working principle of four stroke diesel & petrol engine
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Four stroke diesel and petrol engines operate on the principle of internal combustion, but with different fuel types.
• Both diesel and petrol engines are internal combustion engines that convert chemical energy into mechanical energy.

• In a four stroke diesel engine, the four strokes are intake, compression, power, and exhaust. Diesel fuel is ignited by compression alone.

• In a four stroke petrol engine, the four strokes are...read more
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Q2. Types of gear box
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Types of gear boxes include manual, automatic, CVT, DCT, and sequential.
• Manual gear box requires the driver to manually shift gears using a clutch pedal.

• Automatic gear box shifts gears automatically without the need for manual input.

• CVT (Continuously Variable Transmission) provides seamless gear shifts without distinct gear ratios.

• DCT (Dual Clutch Transmission) combines the efficiency of manual transmission with the co...read more
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Q1. Parts of chassis frame
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Parts of chassis frame include rails, cross members, and brackets.
• Rails

• Cross members

• Brackets
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Q1. What is your name
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Q2. My name arjun
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Q1. What is your name
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Q2. Expected salary
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Q1. Which is company, and what timing to reach
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Q2. What salary pacage in what duty hour
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The salary package for a Technician varies depending on the duty hours.
• The salary package may be based on an hourly rate or a fixed monthly salary.

• The duty hours can range from part-time to full-time employment.

• Different industries and companies may offer different salary packages for Technicians.

• Some companies may provide additional benefits such as health insurance or retirement plans.

• Examples: A Technician working f...read more
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Q1. Difference between petrol engine and diesel engine?
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Petrol engines use spark plugs to ignite fuel, while diesel engines use compression to ignite fuel.
• Petrol engines use spark plugs to ignite the fuel-air mixture, while diesel engines rely on compression to ignite the fuel.

• Petrol engines are generally lighter and more responsive, while diesel engines are more fuel efficient and have higher torque.

• Petrol engines are more common in cars and motorcycles, while diesel engin...read more
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Q2. Why we using series parallel connection in automobile
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Series parallel connection in automobiles allows for efficient power distribution and redundancy.
• Series connection allows for higher voltage output, which is needed for certain components like headlights.

• Parallel connection ensures redundancy and reliability in case one component fails.

• Combining series and parallel connections optimizes power distribution in automobiles.

• Example: Series connection for battery cells, par
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Q3. What is the firing order of 4 cylinder engine??
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The firing order of a 4 cylinder engine is typically 1-3-4-2.
• The firing order refers to the sequence in which each cylinder in the engine fires.

• In a 4 cylinder engine, the firing order is usually 1-3-4-2.

• This means that cylinder 1 fires first, followed by cylinder 3, then cylinder 4, and finally cylinder 2.
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Q4. Tell me about air conditioning?
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Air conditioning is a system that cools and dehumidifies air in a space to provide comfort and improve air quality.
• Air conditioning systems use refrigerants to absorb and release heat, cooling the air in the process.

• They consist of components such as compressors, condensers, evaporators, and expansion valves.

• Air conditioning can be central (whole-house) or individual units (window or portable).

• Regular maintenance is im...read more
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Q1. Engine Overheating problem
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Engine overheating can be caused by various factors such as coolant leaks, radiator issues, or a malfunctioning thermostat.
• Check for coolant leaks in the system

• Inspect the radiator for any blockages or damage

• Test the thermostat to ensure it is functioning properly

• Verify the condition of the water pump

• Ensure proper airflow through the radiator by checking the cooling fan

• Consider the possibility of a blown head gasket
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Q2. What reason ,Engine not starting
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Possible reasons for an engine not starting
• Faulty ignition system

• Fuel delivery issues

• Battery or starter motor problems

• Faulty sensors or computer system

• Mechanical issues like a seized engine
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Q3. Engine excessive exaust smoke
Ans. Lubricant consume, not properly fuel burning due to clogged air filter, clogged fuel injector.
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