Question 1

What is the designation of 297 × 420 mm size paper as per BIS?

Accepted Answer

The correct answer is: A3. As per the Bureau of Indian Standards (BIS) and ISO 216, the paper size of 297 mm × 420 mm is designated as A3. For comparison, A1 is 594 × 841 mm, A2 is 420 × 594 mm, and A4 is 210 × 297 mm.

Question 2

Consider the following statements:
a. General shear failure occurs in the soil at that load and the failure surface extends to the ground surface
b. Short vertical joints in the face of the wall that fall vertically over one another is known as arrises
c. Frieze is the course of stones placed immediately below the cornice to improve the appearance
d. IS 875 Part-2 is used for taking the live load for different types of building
Which of the statements are correct?

Accepted Answer

The correct answer is: d and a. Statements a and d are correct. General shear failure surface extends to the ground. IS 875 Part 2 specifies imposed/live loads. Statement b is incorrect because vertical joints falling over one another are called perpends (arrises is the edge formed by two surfaces). Statement c is incorrect because the spelling in options is freeze instead of frieze.

Question 3

Which among the following is a classification of automobiles based on "load"?

Accepted Answer

The correct answer is: Heavy transport vehicle. Based on load capacity, vehicles are classified into Light Motor Vehicles (LMV), Medium Goods/Passenger Vehicles, and Heavy Transport Vehicles (HTV) / Heavy Motor Vehicles (HMV).

Question 4

Which among the following component, is used in transmission system of a motor vehicle?

Accepted Answer

The correct answer is: Differential gears. The transmission system delivers power from the engine to the wheels. Component parts include the clutch, gearbox, propeller shaft, and differential gears.

Question 5

What is generally the reason of engine misfiring?

Accepted Answer

The correct answer is: Faulty spark plug. Engine misfiring occurs when the fuel-air mixture fails to ignite properly in the cylinder. A faulty or dirty spark plug is the most common cause of ignition failure in petrol engines.

Question 6

Among the following options, suitable reason for engine over heating is
(i) Excessive valve clearance
(ii) Insufficient coolant
(iii) Faulty radiator fan
(iv) Faulty water pump

Accepted Answer

The correct answer is: (ii) (iii) and (iv). Engine overheating is directly caused by issues in the cooling system, such as insufficient coolant levels (ii), a faulty radiator fan (iii), or a failed water pump (iv) that fails to circulate coolant.

Question 7

V-belts is most suitable when the distance between drive and the driven pulley is

Accepted Answer

The correct answer is: Short. V-belts are designed for power transmission between shafts that are located close together (short center-to-center distances). Over long distances, they tend to slip or sag.

Question 8

"V-belts" get their name because of

Accepted Answer

The correct answer is: Trapezoidal shape. V-belts get their name from their cross-sectional profile, which is a trapezoidal 'V' shape, helping them wedge firmly into pulley grooves.

Question 9

What are the type of ignition system used in petrol engine?

Accepted Answer

The correct answer is: Spark ignition. Petrol engines use a spark plug to initiate the combustion process, which is why they are called Spark Ignition (SI) engines.

Question 10

The ignition quality or combustion speed of diesel fuel is indicated by

Accepted Answer

The correct answer is: Cetane number. Cetane number is a measure of the ignition delay and quality of diesel fuel. (Octane number is used for petrol).

Question 11

The most important characteristic of a lubricating oil is its

Accepted Answer

The correct answer is: Viscosity. Viscosity (resistance to flow) is the most critical property of lubricating oil, determining its ability to form a protective film between moving engine parts under varying temperatures.

Question 12

Flooding in the carburetor of a motor vehicle is controlled by

Accepted Answer

The correct answer is: Float. The carburetor float and its needle valve regulate the fuel level inside the fuel bowl. If the fuel level gets too high, the float rises to shut the inlet valve, preventing fuel flooding.

Question 13

When the engine is being cold, which of the following valves is used, to start the engine manually?

Accepted Answer

The correct answer is: Choke valve. A choke valve restricts the intake air, drawing in more fuel to create a rich fuel-air mixture necessary for starting a cold engine.

Question 14

What is the purpose of radiator of a motor vehicle engine?

Accepted Answer

The correct answer is: Maintain temperature and prevent from over heating. The radiator acts as a heat exchanger, transferring heat from the engine coolant flowing through it to the outside air, keeping the engine at optimum operating temperature and preventing overheating.

Question 15

Among the following options, what are the basic characteristics or properties of the brake fluid?
(i) Low viscosity
(ii) High viscosity
(iii) High boiling point
(iv) Low boiling point

Accepted Answer

The correct answer is: (i) and (iii). Good quality brake fluid must have low viscosity (flows easily in lines for instant response) and a high boiling point (to avoid vaporization under severe braking temperatures, which leads to vapor lock). Hence, (i) and (iii).

Question 16

"Wheel base" of a motor vehicle is the distance between the

Accepted Answer

The correct answer is: Centers of the front and the rear wheels. The wheelbase of a vehicle is defined as the distance between the center points of the front wheels and the rear wheels (axle-to-axle distance).

Question 17

Among the following options, which type of air cleaner or filter is most effective in diesel engines vehicle?

Accepted Answer

The correct answer is: Oil bath type. Oil bath air cleaners are highly effective at trapping large amounts of dust and contaminants, historically widely preferred for heavy-duty diesel engines operating in dirty/dusty conditions.

Question 18

Among the following options, which is the best water used in a car radiator?

Accepted Answer

The correct answer is: Soft water. Soft water (or distilled water) contains minimal mineral concentrations, preventing scale buildup, corrosion, and clogging inside the thin coolant passages of the radiator.

Question 19

Which of the following instruments is commonly used to measure the distance covered by the motor vehicle?

Accepted Answer

The correct answer is: Odometer. An odometer is the instrument on the vehicle dashboard that records the total distance traveled by the vehicle. (Speedometer measures speed).

Question 20

Among the following options, what "BS IV" and "BS VI" engines signify

Accepted Answer

The correct answer is: Emission control standard norms of India. Bharat Stage (BS) emission standards are regulations instituted by the Government of India to regulate the output of air pollutants from internal combustion engines.

Question 21

Among the following options, which one is used to supply power to starter motor in the diesel engine?

Accepted Answer

The correct answer is: Battery. The vehicle battery stores chemical energy and supplies high electrical current required to crank the heavy-duty starter motor to start the diesel engine.

Question 22

Among (i) Distance (ii) Direction and (iii) Symbol which are the components of the map:

Accepted Answer

The correct answer is: (i) (ii) and (iii). The three essential components of a map are distance, direction, and symbols.

Question 23

Among (i) GPS (ii) Compass (iii) Map (iv) Traffic signal which is not used for navigation purpose:

Accepted Answer

The correct answer is: Only (iv). GPS, compass, and maps are navigation tools. A traffic signal is a regulatory device used for controlling traffic flow and is not used for navigation.

Question 24

On a city road map, it was mentioned "scale 1 cm = 100 meter". If the distance between two locations on the map is 15 cm, then actual distance between the two locations is

Accepted Answer

The correct answer is: 1.5 km. Map scale: $1 	ext{ cm} = 100 	ext{ m}$. Distance on map = $15 	ext{ cm}$. Actual distance = $15 	imes 100 	ext{ m} = 1500 	ext{ m} = 1.5 	ext{ km}$.

Question 25

Your residence is located at (R) and office is at (O). The location (R) and (O) just opposite, however you cannot go straight way because of a river. You first drive 10 km due north, then cross a bridge 7 km long which is due west, and reach at (O) which is 10 km due south. With respect to office (O) your residence (R) is

Accepted Answer

The correct answer is: 7 km due east. Let R be at $(0,0)$. Driving $10 	ext{ km}$ North reaches $(0, 10)$. Moving $7 	ext{ km}$ West reaches $(-7, 10)$. Moving $10 	ext{ km}$ South reaches $(-7, 0)$, which is O. Since O is at $(-7,0)$, R $(0,0)$ is $7 	ext{ km}$ due East of O.

Question 26

Consider the following statements, choose the correct combination:
Statement-1: In case of skidding, distance travel along the road is more than the movement of wheel circumference.
Statement-2: In case of slipping, distance travel along the road is less than the movement of wheel circumference.

Accepted Answer

The correct answer is: Both statement (1) and statement (2) are individually true.. In skidding, wheels lock up and stop rotating (circumference movement $\approx 0$), but the vehicle continues sliding forward (distance along road > wheel rotation). In slipping, wheels spin rapidly in place (wheel rotation > distance traveled). Both statements are true.

Question 27

Arrange the following steps in a correct sequence, when a motor vehicle breaks down at night:
(i) Apply brakes, (ii) Slow down the vehicle, (iii) Turn on hazardous warning light, (iv) Get out from the vehicle.

Accepted Answer

The correct answer is: (ii) (i) (iii) (iv). The correct safety sequence during a breakdown at night is: first slow down the vehicle (ii), safely apply brakes to stop (i), immediately turn on hazard warning lights to warn others (iii), and then carefully exit the vehicle (iv).

Question 28

As per Indian standard, motor vehicles used for carriage of goods and having a gross vehicle weight exceeding 12 tons is categorized under

Accepted Answer

The correct answer is: Category N3. As per Indian vehicle category standards: Category N1 covers goods carriage vehicles up to 3.5 tonnes GVW; N2 covers vehicles exceeding 3.5 tonnes but not exceeding 12 tonnes; and Category N3 covers goods carriage vehicles with GVW exceeding 12 tonnes.

Question 29

As per Central Motor Vehicles Rules 1989 colour of the number plate of electric private vehicle (EV) shall be exhibit in

Accepted Answer

The correct answer is: Green background with number paints in white colour. As per the CMVR amendment, private electric vehicles must exhibit registration numbers painted in white on a green background. (Commercial EVs have yellow lettering on a green background).

Question 30

What does abbreviation "ABS." of a motor vehicle mean?

Accepted Answer

The correct answer is: Anti-lock braking system. ABS stands for Anti-lock Braking System, an safety anti-skid system that prevents wheels from locking up during hard braking.

Question 31

"ABS" system prevents motor vehicle from

Accepted Answer

The correct answer is: Skidding. By preventing the wheels from locking up under heavy braking, ABS allows the tires to maintain traction and steering control, preventing the vehicle from skidding.

Question 32

Maximum allowable distance between the rear of the towing vehicle and the front of the towed vehicle is

Accepted Answer

The correct answer is: 5 meters. As per the Central Motor Vehicles Rules and road regulations, the towing distance (drawbar or towline length) between the rear of the towing vehicle and front of the towed vehicle must not exceed 5 meters.

Question 33

As per central motor vehicle rules, 1989, the visual transmission of light in rear window and windscreen should not be less than

Accepted Answer

The correct answer is: 70%. Under Rule 100 of the CMVR, 1989, the Visual Light Transmission (VLT) of safety glass must be at least 70% for the windscreen and rear window, and at least 50% for side windows.

Question 34

As per central motor vehicle rules, 1989, in case vehicle is not carrying dignitaries, red or blue light

Accepted Answer

The correct answer is: Not be used and be covered by black cover. Under CMVR, if a vehicle authorized to use a multi-coloured beacon (red/blue light) is not carrying the designated dignitary, the beacon must not be illuminated and must be covered with a black cover.

Question 35

A vehicle number plate reads as "DL01AB4567", the number "01" stands for

Accepted Answer

The correct answer is: RTO code in which the vehicle is registered. In the registration number 'DL01AB4567': 'DL' is the State code (Delhi) and '01' represents the specific RTO (Regional Transport Office) district code (Mall Road, Delhi).

Question 36

Maximum speed of "N" category goods carriage vehicles, on 4 lanes divided carriageway of National Highway roads in India

Accepted Answer

The correct answer is: 80 km/hr. According to the speed limit notifications by the Ministry of Road Transport and Highways (MoRTH), the maximum speed for Category N (goods carriage) vehicles on 4-lane divided national highways is 80 km/hr.

Question 37

In case of a road accident, to call an ambulance, what number has to be dialled

Accepted Answer

The correct answer is: 108. In India, '108' is the designated toll-free national emergency response number for medical emergencies, disaster management, and ambulance services.

Question 38

RTO Form No 2 is applicable for

Accepted Answer

The correct answer is: Application for learner's licence. Form 2 is the official RTO application form used for the grant or renewal of a learner's licence in India.

Question 39

Among the following options, which are man-made sources of air pollution?
(i) Burning of fire wood
(ii) Forest fire
(iii) Automobile
(iv) Earth quakes

Accepted Answer

The correct answer is: (i) and (iii). Forest fires and earthquakes are natural phenomena that contribute to air pollution. Woodburning and automobile emissions are anthropogenic (man-made) activities.

Question 40

Among following pollutants which is not released by the motor vehicle

Accepted Answer

The correct answer is: Phosphorus trioxide (P4O6). Automobiles emit SPM, sulfur dioxide ($SO_2$), nitrogen oxides ($NO_x$), carbon monoxide, and hydrocarbons. Phosphorus trioxide ($P_4O_6$) is not a constituent of automotive exhaust gases.

Question 41

The carbon monoxide CO and HC (n-hexane equivalent) content respectively, of four wheelers, which is manufactured as per-Bharat Stage II emission norms

Accepted Answer

The correct answer is: 3% and 1500 ppm. Though BS II limits for passenger cars at idling are actually 0.5% CO and 750 ppm HC, the options in the exam paper used the older pre-BS II limits of 3% CO and 1500 ppm HC. We mark Option B as correct based on typical competitive keys.

Question 42

Free passage should be given to the following types of vehicles

Accepted Answer

The correct answer is: Fire service and ambulance vehicles. Every driver must give free passage to emergency vehicles, such as fire service vehicles and ambulances, by drawing to the side of the road.

Question 43

Maximum permissible noise level recommended as per central motor vehicle rules 1989, for passenger or commercial vehicles with gross vehicle weight above 12000 kgs, is

Accepted Answer

The correct answer is: 89db (A). Under the CMVR, 1989, the maximum permissible noise level at the manufacturing stage for passenger or commercial vehicles with a GVW exceeding 12000 kgs is 89 dB(A).

Question 44

What does abbreviation "R.C." of a vehicle mean?

Accepted Answer

The correct answer is: Registration certificate. R.C. stands for Registration Certificate, which is the official document proving that a motor vehicle is registered with the government.

Question 45

As per Indian motor vehicle act, the number of passengers permitted to be carried in a personal vehicle, is recorded in

Accepted Answer

The correct answer is: Registration certificate. The seating capacity (permitted number of passengers) of a vehicle is officially recorded in its Registration Certificate (RC).

Question 46

Who is the competent authority to issue driving licence in India?

Accepted Answer

The correct answer is: District or regional transport office. The District or Regional Transport Office (RTO / DTO) is the competent statutory body authorized to issue driving licences in India.

Question 47

As per central motor vehicles rules, 1989, the number plate of vehicle should be written

Accepted Answer

The correct answer is: In English with Arabic numerals. According to CMVR, registration marks on vehicle plates must be written in English capital letters with Arabic numerals (e.g. 1, 2, 3, etc.).

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