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The correct answer is impact.

Key Points

• Leaf springs are a type of suspension system used in vehicles, including cars, to provide support and absorb shocks.
• The curvature of leaf springs helps them to effectively absorb impact forces that occur when the car moves over bumps, potholes, or uneven surfaces.
• When an impact occurs, the curvature of the spring allows it to flex, thereby dissipating the energy of the shock and reducing the force transmitted to the vehicle body.
• Leaf springs are designed to handle both vertical loads and the forces generated during braking and acceleration.
• They are commonly used in the suspension systems of trucks, buses, and older car models, as they are robust and cost-effective.
• The specific design of the curvature also ensures that the spring can return to its original shape after the impact force is absorbed, maintaining vehicle stability and ride comfort.
• This property of leaf springs contributes to the durability and longevity of the suspension system.

Additional Information

• Tension
• Tension refers to a pulling force transmitted through a string, rope, or similar object.
• In mechanical systems, tension is not a primary function of leaf springs, as they are designed to handle compression and bending forces rather than pulling forces.
• Compression
• Compression involves forces that attempt to shorten or squeeze a material.
• While leaf springs experience compression as part of their operation, their primary role is to absorb impact forces, which may include both compression and bending.
• Twisting
• Twisting refers to torsional forces applied to an object.
• Leaf springs are not designed to handle significant twisting forces, as their primary purpose is to absorb vertical impacts and maintain suspension stability.

The Correct answer is 55 dB(A) Leq.

Key Points

• The Ambient Air Quality Standards in respect of noise are defined by the Central Pollution Control Board (CPCB) under the Noise Pollution (Regulation and Control) Rules, 2000 in India.
• For a residential area, the permissible noise level during the daytime (6:00 AM to 10:00 PM) is 55 dB(A) Leq.
• The unit dB(A) refers to decibels measured using the A-weighting scale, which accounts for the sensitivity of the human ear to different frequencies.
• Noise levels are monitored to ensure compliance with these standards to minimize noise pollution and protect public health.
• Excessive noise can lead to adverse effects such as stress, hearing loss, sleep disturbances, and cardiovascular problems.
• Daytime noise standards are generally lower in areas like residential zones to ensure a peaceful environment for inhabitants.

Additional Information

• 45 dB(A) Leq
• This noise level is typically prescribed for silent zones, such as areas surrounding hospitals, schools, and courts.
• Silent zones have stricter noise standards to ensure minimal disturbance and a conducive environment for sensitive activities.
• 75 dB(A) Leq
• This is the permissible noise level for industrial areas during the daytime.
• Industrial zones allow higher noise levels as they are primarily involved in manufacturing activities and are less sensitive compared to residential areas.
• 65 dB(A) Leq
• This noise level is prescribed for commercial areas during the daytime.
• Commercial areas include markets, offices, and business establishments, where moderate noise levels are acceptable.

The Correct answer is Carburettor.

Key Points

• A carburettor is not a part of a vehicle's transmission system but is instead a component of the fuel system.
• It is responsible for mixing fuel and air in the correct ratio to ensure efficient combustion in the engine.
• Carburettors are commonly found in older vehicle models, as modern vehicles often use fuel injection systems for better efficiency and control.
• The carburettor operates on the principles of airflow dynamics, using the vacuum created by the engine to draw fuel into the intake manifold.
• It is generally located near the engine's intake manifold and connects to the air filter and fuel supply.
• The carburettor is crucial for the performance and fuel efficiency of traditional internal combustion engines.

Additional Information

• Propeller Shaft
• The propeller shaft is a key component of the transmission system in rear-wheel and four-wheel drive vehicles.
• It transmits torque from the gearbox to the differential and ultimately to the wheels.
• It is designed to handle both rotational motion and the axial movement caused by vehicle vibrations.
• Clutch Assembly
• The clutch assembly is part of the transmission system that connects and disconnects the engine from the gearbox.
• It enables the driver to change gears smoothly and prevents stalling during stationary conditions.
• The clutch assembly consists of components like the clutch plate, pressure plate, and release bearing.
• Gearbox Assembly
• The gearbox assembly is an essential part of the transmission system.
• It provides multiple gear ratios to ensure the engine delivers the required torque and speed for different driving conditions.
• Modern vehicles feature manual, automatic, or continuously variable transmissions (CVTs).

The correct answer is Wipe excess oil and grease off hands.

Key Points

• Wiping off excess oil and grease from your hands is an essential safety measure during vehicle servicing.
• Oil and grease can make your hands slippery, increasing the risk of accidents or mishandling tools and equipment.
• It helps maintain a firm grip while using tools, ensuring better control and reducing the chances of slipping or injury.
• Clean hands also prevent the transfer of grease to other components, which could potentially damage or affect the functioning of certain mechanical or electrical parts.
• Proper hygiene is maintained, reducing the risk of skin irritation or other health issues caused by prolonged contact with grease or oil.
• Many professional workshops emphasize this practice as part of their standard safety protocols.
• Using degreasers or cleaning agents designed for mechanics is recommended for effective cleaning.

Additional Information

• Place a jack in a slipping position
• Placing a jack in a slipping position is highly dangerous as it can lead to the collapse of the vehicle, causing severe injury or damage.
• Jacks should always be positioned on a stable surface and used with proper chocks or support to ensure safety.
• Work with lower concentration
• Working with lower concentration increases the risk of errors and accidents during servicing.
• Vehicle servicing requires a high level of attention to detail and focus to ensure all components are handled correctly.
• Use inapt tools
• Using inappropriate tools can damage vehicle parts and pose a risk to the person performing the servicing.
• For example, using the wrong size of a wrench may strip bolts or cause them to break.

The Correct answer is state.

Key Points

• In India, the license plate system follows a specific format as defined by the Motor Vehicles Act, 1988.
• The first two digits on a vehicle's license plate represent the state code where the vehicle is registered. For example, DL stands for Delhi, MH for Maharashtra, and KA for Karnataka.
• These state codes are crucial for identifying the origin of the vehicle and for administrative purposes such as taxation and regulation.
• India uses a centralized vehicle registration system to ensure uniformity and facilitate easier identification of vehicles across different states and union territories.
• This system helps in managing and tracking vehicles in case of theft, accidents, or law enforcement activities.
• The state-wise codes are governed and allocated by the Ministry of Road Transport and Highways (MoRTH).
• This identification system also aids in interstate transport and helps authorities in enforcing rules and collecting toll taxes efficiently.

Additional Information

• District
• The district is a smaller administrative division within a state. Unlike the state code, the district is not directly represented on the license plate.
• However, the Regional Transport Office (RTO) code, which is part of the license plate, indirectly indicates the district where the vehicle was registered.
• Tehsil
• A tehsil is an even smaller administrative division than a district. It is not used in the vehicle registration system in India.
• Tehsils are primarily used for local governance and revenue-related activities.
• RTO
• The Regional Transport Office (RTO) is responsible for vehicle registration and issuing licenses within a particular jurisdiction, such as a district or city.
• The RTO code is part of the license plate but comes after the state code. For example, in "MH 01 AB 1234," "01" indicates the RTO within Maharashtra.

The correct answer is Crank Shaft.

Key Points

• The crankshaft is not a part of the transmission system of a vehicle; instead, it is a key component of the engine's internal mechanism.
• It converts the linear motion of the pistons into rotational motion, which is then transmitted to other components of the drivetrain.
• It is located within the engine block and is connected to the piston rods to facilitate this conversion.
• As part of the engine, the crankshaft operates in conjunction with other components like the camshaft, piston, and cylinder to generate power.
• The crankshaft also plays a significant role in maintaining the engine's balance and ensuring smooth operation.
• While it is essential for the engine's operation, it is not directly involved in the power transmission system, which primarily transfers power from the engine to the wheels.

Additional Information

• Clutch Assembly
• The clutch assembly is a key component of the transmission system.
• It facilitates the engagement and disengagement of the engine from the transmission, allowing for smooth gear changes.
• The clutch is typically located between the engine and the gearbox.
• It consists of components like the clutch plate, pressure plate, and release bearing.
• Gearbox Assembly
• The gearbox assembly is another critical part of the transmission system.
• It helps in varying the speed and torque of the vehicle by providing different gear ratios.
• Modern vehicles often use manual, automatic, or continuously variable transmissions (CVTs) for efficient power delivery.
• Propeller Shaft
• The propeller shaft, also known as the driveshaft, is used in vehicles with a rear-wheel-drive layout.
• It transmits rotational power from the gearbox to the rear differential.
• The propeller shaft is usually a long tubular shaft and is equipped with universal joints to accommodate variations in alignment.

The Correct answer is Section 146.

Key Points

• Section 146 of the Motor Vehicles Act, 1988 mandates the necessity of having insurance for a motor vehicle against third-party risks.
• This section ensures that no motor vehicle is used in a public place unless there is a valid third-party insurance policy in force.
• The purpose of this provision is to provide financial security to third parties who may suffer loss, injury, or damage due to the use of the insured vehicle.
• The policy covers liabilities towards third parties, including injuries, death, or property damage.
• This insurance is a legal requirement in India and is critical for ensuring the safety of road users.
• Failure to comply with Section 146 can result in penalties, fines, or imprisonment as prescribed under the Motor Vehicles Act.
• The provision reflects the government’s initiative to promote road safety and provide relief to victims of road accidents.

Additional Information

• Section 132
• Section 132 of the Motor Vehicles Act, 1988, deals with the duty of the driver to stop the vehicle and comply with the requirements of a police officer in case of an accident.
• This section ensures that drivers take responsibility and assist in investigations when an accident occurs.
• Section 158
• Section 158 mandates that certain information about the vehicle and the driver involved in an accident should be sent by the police officer to the claims tribunal and the insurer.
• It facilitates the settlement of claims arising out of accidents.
• Section 149
• Section 149 deals with the settlement of claims by the insurer and ensures that the insurer is liable to pay the claims arising from third-party damages.
• It emphasizes the role of insurers in compensating victims of road accidents.

The Correct answer is Keep the AC functional, even occasionally during winters.

Key Points

• Running the air conditioning (AC) periodically during winters ensures that the system remains functional and prevents any damage caused by prolonged inactivity.
• It helps keep the lubricants circulating within the AC system, maintaining the seals and preventing them from drying out or cracking.
• Activating the AC occasionally also prevents the accumulation of dust and debris in the system, ensuring its components remain clean and operational.
• Regular use of the AC system during winters helps prevent issues like the growth of mold or bacteria within the vents, improving the air quality when the system is used again.
• Some vehicles automatically engage the AC during defrost mode in winter, but manually running it occasionally is still beneficial for maintenance.
• Maintaining the AC system year-round can help avoid costly repairs or replacements due to neglect.

Additional Information

• Proper tyre pressure is not necessary
• Maintaining proper tyre pressure is essential for vehicle safety, fuel efficiency, and extending the lifespan of tyres.
• Incorrect tyre pressure can lead to uneven wear and tear, reducing the durability of tyres.
• It affects the vehicle’s handling and stability, increasing the risk of accidents.
• Keeping the right tyre pressure improves fuel economy, as underinflated tyres cause increased rolling resistance.
• Always use mixed coolants
• It is recommended to use the coolant specified by the manufacturer to ensure proper engine cooling and prevent corrosion.
• Mixing coolants can lead to chemical reactions, reducing their effectiveness and potentially damaging the cooling system components.
• Using the correct coolant ensures optimal performance and protects the engine from overheating or freezing in extreme temperatures.
• Drive the car even if there is no brake fluid
• Brake fluid is a critical component for the functioning of the braking system. Driving without it is extremely dangerous.
• A lack of brake fluid can result in complete brake failure, increasing the risk of accidents.
• Regularly checking and maintaining the brake fluid level is essential for safe vehicle operation.
• Brake fluid also prevents corrosion in the braking system, ensuring its longevity.

The Correct answer is Opt for perpendicular parking.

Key Points

• Perpendicular parking involves parking vehicles at a 90-degree angle to a curb or wall. This type of parking is common in designated spaces, such as parking lots.
• This method is not suitable for roadside parking as it can obstruct the flow of traffic, leading to accidents or congestion.
• It is essential to follow proper parking techniques and guidelines to ensure road safety and maintain the smooth movement of vehicles.
• Improper perpendicular parking can result in traffic violations and fines in many countries.
• Drivers must avoid perpendicular parking unless the space is specifically designated for such parking.

Additional Information

• Always look for authorized parking
• Authorized parking zones are designated areas for parking vehicles, ensuring safety and smooth traffic flow.
• Parking in unauthorized areas can lead to penalties, towing, or other legal actions.
• Examples of authorized parking areas include parking lots, garages, and marked roadside spaces.
• Respect no parking zones on the road
• No parking zones are areas where parking is restricted to maintain traffic flow, emergency access, or pedestrian safety.
• Examples include zones near fire hydrants, intersections, or schools.
• Always use your indicators while parking
• Using indicators while parking ensures that other road users are aware of your intentions, reducing the risk of collisions.
• It is a crucial aspect of defensive driving and road safety rules.

The Correct answer is carburettor.

Key Points

• A carburettor is a device that blends air and fuel for an internal combustion engine in the proper ratio for combustion.
• It is used in petrol engines to atomise and vaporise the fuel before it enters the combustion chamber.
• The carburettor ensures the correct air-fuel mixture, enabling efficient engine performance.
• It operates on the principle of vacuum, created by the movement of the pistons and the throttle valve, to draw fuel into the airstream.
• Modern vehicles have largely replaced carburettors with fuel injection systems, but they are still used in some older vehicles and small engines.
• The carburettor is particularly effective in ensuring the engine operates optimally in different conditions, such as during acceleration, idling, or cruising.

Additional Information

• Injector
• An injector is used in fuel injection systems, which have replaced carburettors in most modern vehicles.
• It sprays a fine mist of fuel directly into the combustion chamber or the intake manifold.
• Fuel injection systems are more efficient and offer better control over the air-fuel mixture.
• Air Cleaner
• An air cleaner filters the air entering the engine to remove dust, debris, and other contaminants.
• It is an essential component to ensure the longevity of the engine and maintain its efficiency.
• However, it does not mix air and fuel like a carburettor.
• Fuel Pump
• A fuel pump is responsible for delivering fuel from the tank to the carburettor or fuel injectors.
• It ensures the correct pressure for fuel delivery but does not atomise or vaporise the fuel.