| Post Name | Motor Transport Sub Inspector |
|---|---|
| Department | Police Motor Transport Wing |
| Question Paper Code | 059/2025/OL |
| Category Code | 090/2024 |
| Date of Test | 24 June 2025 |
| Exam Type | Online Examination |
| Total Questions | 100 |
1
According to Frederick Taylor, what was the primary goal of scientiļ¬c management?
Answer
D. To increase eļ¬ciency and productivity
2
Which type of wage reļ¬ects the actual purchasing power of money earned?
Answer
C. Real Wage
3
Which of the following is NOT a key diļ¬erence between PERT and CPM?
Answer
D. PERT allows for project crashing and CPM does not
4
Which of the following is not a method to ļ¬nd an initial basic feasible solution in a transportation problem?
Answer
C. MODI Method
5
What happens to the EOQ if the holding cost increases?
Answer
A. A decrease in EOQ
6
Which production method is best suited for industries producing products like oil, chemicals, or pharmaceuticals?
Answer
D. Continuous production
7
What is the correct formula to calculate normal time in time study?
Answer
B. Normal Time = Observed Time x Performance Rating
8
What is the purpose of a control chart in quality control?
Answer
A. To monitor the stability of a process over time
9
What is the main diļ¬erence between quality control (QC) and quality assurance (QA)?
Answer
B. QC focuses on identifying defects, while QA focuses on preventing them
10
Which formula is used to calculate machining time in a lathe operation?
Answer
D. Time = Length / (Feed * RPM)
11
In foundry practice, which tool is used to make impressions for gates and runners in sand molds?
Answer
C. Gate cutter
12
In welding, excessive warping is mainly caused by :
Answer
C. Uneven heating
13
In orthogonal cutting, the cutting edge of the tool remains :
Answer
B. Perpendicular to the direction of tool travel
14
The method used to produce gears with precision using a rotating cutter is called
Answer
C. Gear hobbing
15
Which abrasive is naturally occurring?
Answer
C. Diamond
16
In ļ¬exible manufacturing systems, a "cell" typically refers to
Answer
B. A group of CNC machines with automated material handling
17
In ultrasonic non-destructive testing, sound waves of which frequency range are used?
Answer
C. Above 20 kHz
18
Speciļ¬c weight of a ļ¬uid is deļ¬ned as
Answer
A. Weight per unit volume
19
The viscosity of a gas ______________ with increase of temperature
Answer
B. Increases
20
Venturi meter is working under the principle of
Answer
B. Bernoulli's principle
21
Euler equation for water turbine is derived on the basis of
Answer
A. Rate of change of angular momentum
22
The energy loss due to friction in a pipe is given by
Answer
A. Dracy's formula
23
Chances of occurrence of cavitation are high if the
Answer
A. The pressure falls below vapor pressure
24
If two identical pumps connected in series the resulting head is
Answer
A. 2H
25
When an air vessel is ļ¬tted to a single acting reciprocating pump the % of saving in work done against friction is
Answer
A. 84.8%
26
A body of mass 50 kg slides down as inclined plane having a coeļ¬cient of friction Ī¼, starting from rest. If it attains a velocity of 10 m/s covering a distance S along the inclined plane, which of the following statements will hold true?
Answer
C. S(g sin Ī± ā Ī¼g cos Ī±) = 50
27
Identify the incorrect statement
Answer
D. The moment of inertia depends on the distribution of mass in a body and the angular velocity
28
A tensile load of 400 kN is applied along the length of a steel bar having Young's modulus 200 GPa and Poisson's ratio of 0.25. What would be the resulting change of volume if the steel bar was initially 200 mm long, 50 mm wide and 40 mm thick?
Answer
B. 200
29
A horizontal beam of length 20 cm carrying a uniformly distributed load Ļ kg/m is supported at two points, 5 cm from each end. Which of the following statements is true?
Answer
C. The points of contraļ¬exure will be where the supports are provided
30
A torque of 1000 Nm is applied at a section of a shaft 12 cm from one of its end. What would be the ļ¬xing torque at the other end of the shaft if the shaft has a diameter of 5 cm and is 15 cm long with both ends rigidly ļ¬xed?
Answer
A. 800 Nm
31
A hollow circular shaft has inner and outer diameters 10 cm and 20 cm respectively. If this is replaced by a solid circular shaft of diameter 20 cm, how much more torque can be transmitted assuming the shear stress in both cases not to exceed 64 N/mmĀ²?
Answer
A. 2ĻĆ10ā¶ NĀ·mm
32
A Watt Governor has an angular velocity of 5 rad/s. Taking 'g' as 10 m/ , the percentage change in governor height when the angular velocity changes to 6 rad/s will be
Answer
D. 30 %
33
The ratio of hoop stress to the maximum shear stress in the case of a thin cylinder subjected to internal ļ¬uid pressure is
Answer
B. 4 : 1
34
Choose the correct statement
Answer
C. Module is the length of pitch circle diameter per unit number of teeth
35
Which of the following is not true in Euler's column theory?
Answer
B. Crippling load is the sum of applied forces and the self-weight of the column when it starts to buckle
36
Air standard efficiency of an Otto cycle is given by 1ā1/r^n, where r is the compression ratio. The value of 'n' in this equation is
Answer
A. Ī³ā1
37
At what time sub cooling subcooling occurs?
Answer
B. When the vapor removes sensible heat from the refrigerant
38
In a simple vapor compression cycle, the refringent is in the form of dry saturated vapor before entering
Answer
B. Compressor
39
The relative humidity of ambient air at 300 K is 50% with a partial pressure of water vapor equal to pįµ„. The saturation pressure of water at 300 K is pāāā. The correct relation for the air-water mixture is
Answer
C. pįµ„=0.5pāāā
40
The ratio of B.H.P. to I.H.P. of an I.C. Engine is called
Answer
D. Mechanical eļ¬ciency
41
Which of the following non-dimensional terms is an estimate of Nusselt number?
Answer
B. Non-dimensional temperature gradient
42
Under which cycle does the vapor compression system work?
Answer
D. Reversed Carnot cycle
43
The thermal conductivity in S.I. unit is expressed as
Answer
A. W/(mĀ·K)
44
Three metal walls at the same cross-sectional area having thermal resistance in the ratio 1:2:4 transfer heat at the rate of 6000 W. For the same wall thickness, the temperature drops will be in the ratio
Answer
C. 1:1/2:1/4
45
In the case of a heat exchanger, the value of logarithmic mean temperature diļ¬erentiate should be
Answer
A. As large as possible
46
An internal combustion engine has a swept volume of and a clearance volume of . What is the compression ratio of the engine?
Answer
C. 11
47
In a 4-stroke petrol engine, the inlet valve opens 10Ā° before Top Dead Center (TDC) and closes 40Ā° after Bottom Dead Center (BDC). The exhaust valve opens 50Ā° before Bottom Dead Center (BDC) and closes 10Ā° after Top Dead Center (TDC). What is the valve overlap period?
Answer
B. 20Ā°
48
Which one of the following engine components is least likely to be inļ¬uenced by creep in its design?
Answer
C. Connecting rod
49
In a modern Gasoline Direct Injection (GDI) system, the fuel pump located at the fuel tank typically operates at around _____ bar, while the pump near the fuel injector operates at approximately ____ bar, respectively.
Answer
B. 5 and 200
50
What is the primary function of a carburettor in a petrol engine?
Answer
B. To mix air and fuel in the correct ratio before it enters the engine
51
The principle used by a carburettor to draw fuel into the air stream is :
Answer
A. Bernoulli's principle
52
What controls the timing and duration of fuel injection in a CRDI system?
Answer
D. Electronic Control Unit (ECU)
53
Which oil grade would be more suitable for extremely cold climates?
Answer
D. SAE 5W - 30
54
What is the typical opening temperature range for a thermostat in a car engine?
Answer
C. 80Ā°C - 92Ā° C
55
Which coolant formulation is most commonly used in modern automotive engines to ensure eļ¬cient heat transfer, freeze protection, and corrosion resistance for mixed metal engine blocks?
Answer
B. Ethylene glycol-water mixture with corrosion inhibitors
56
An automotive battery is rated at 60 Ah (Ampere - hours). If it supplies a constant current of 5 A, how long can it theoretically supply this current before becoming fully discharged?
Answer
C. 12 hours
57
A 12V battery is charged with a current of 5 A for 4 hours. How much energy is supplied to the battery?
Answer
C. 240 Wh
58
What type of battery is commonly used in electric vehicles (EVs)?
Answer
C. Lithium-ion
59
Which device is commonly used in modern automobiles to charge the battery and power electrical systems?
Answer
B. Alternator
60
Which of the following is not a component of the spark ignition system?
Answer
C. Carburettor
61
Which material is commonly used for the center electrode in high- performance spark plugs?
Answer
C. Iridium
62
In automotive bulbs, what does 'H4" refer to?
Answer
C. Dual-ļ¬lament headlamp bulb speciļ¬cation
63
Which components converts the rotary motion of the wiper motor into oscillating motion of the wiper arms?
Answer
B. Linkage mechanism
64
In a distributor-less ignition system (DLI), the ignition coil is :
Answer
B. Mounted directly on each spark plug
65
Which of the following is not a function of the glow plug in a diesel engine?
Answer
A. Provide spark for ignition
66
Match the two-wheeler frame types in column A with their corresponding characteristics in column B Column A (Frame) Column B (Characteristic) A. Backbone 1. Surround the engine for enhanced cornering performance B. Diamond 2. Ease of access and rider comfort C. Perimeter 3. Optimized for weight distribution and strength using multiple tubes D. Step-through 4. Lightweight and cost-eļ¬ective E. Trellis 5. Provides high rigidity and stability
Answer
C. A4, B5, C1, D2, E3
67
Assertion (A) : Air suspension systems provide a more comfortable ride than conventional suspension systems. Reason (R) : Air suspension allows dynamic adjustment of the air spring stiļ¬ness based on load and road conditions.
Answer
A. Both (A) and (R) are true, and (R) is the correct explanation of (A)
68
What is the role of the Pitman arm in a steering gearbox?
Answer
B. To transmit motion from the gearbox to the steering linkage
69
What is the eļ¬ect of excessive toe-out on a vehicle?
Answer
B. Increased tyre wear on the inner edges
70
How does ABS aļ¬ect braking on wet roads compared to traditional braking systems?
Answer
D. It reduces braking distance and improves control
71
What happens when the clutch pedal is pressed in a vehicle with a multi-plate clutch?
Answer
B. The friction plates are disengaged
72
In a torque converter, what is the term used to describe the condition when the impeller and turbine rotate at nearly the same speed?
Answer
C. Lock-up
73
What is the role of the bead in a tyre?
Answer
B. To ensure a secure ļ¬t between the tyre and the wheel rim
74
In a turbocharged internal combustion engine, what powers the turbine connected in the compressor?
Answer
C. Energy from exhaust gases
75
Detonation in a spark-ignition engine results in
Answer
D. Knocking noise and mechanical damage
76
Which of the following is not a suitable method for reducing diesel knock in a compression ignition engine?
Answer
C. Lowering the injection pressure
77
What does the term "available energy" (or exergy) signify in thermodynamics?
Answer
C. The maximum useful work from a system
78
The internal energy change of an ideal gas during an isothermal process is
Answer
A. Internal energy remains constant
79
Which two processes in an air-standard Otto-cycle are reversible and adiabatic (isentropic)?
Answer
A. Compression and expansion
80
In Morse test, the indicated power of a multi-cylinder engine can be determined by
Answer
A. Shutting down one cylinder at a time
81
Which of the following tests is used to detect worn piston rings or valves?
Answer
B. Compression test
82
Bleeding of a diesel fuel system is done to
Answer
C. Eliminate air from fuel lines
83
Phasing in diesel F.I. pumps ensures
Answer
C. Injectors open at correct order and timing
84
Excessive tyre wear on both outer edges of the tread is usually a sign of
Answer
B. Underinļ¬ation
85
Play in the steering gearbox is usually corrected by adjusting
Answer
B. Sector shaft clearance
86
In hydraulic brakes, a spongy brake pedal is typically caused by
Answer
C. Air trapped in brake lines
87
Which of the following body construction methods oļ¬ers better crash safety and weight reduction?
Answer
B. Unitised frame and body construction
88
Fiberglass used in car body construction is a composite of glass ļ¬bres and :
Answer
B. Epoxy or resin matrix
89
An AGV (Automatic Guided Vehicle) is most commonly used in :
Answer
C. Industrial automation and cargo movement
90
Super elevation is provided in roads to counteract :
Answer
B. Skidding on curves
91
Who is a 'Good Samaritan' as envisaged in Section 134A of Motor Vehicles Act 1988? (i) One who is providing medical care to the victims of accident (ii) One who is providing non-medical care or assistance at the scene of accident (iii) One who is providing legal aid to the victim (iv) One who transports victim to the hospital
Answer
B. (i), (ii) and (iv) only
92
A heavy goods vehicle means a goods vehicle whose gross vehicle weight exceeds
Answer
C. 12000 kg
93
In an intersection of two major roads, preference should be given to
Answer
D. Vehicles coming from right side
94
Which of the following are the manual hand signals to be shown in vehicles not ļ¬tted with electrical or mechanical signal in devices? (i) Stop signal (ii) Right turn signal (iii) Slow down signal (iv) Left turn signal (v) Signal permitting to overtake
Answer
D. (i), (ii), (iv) and (v)
95
What is safe distance?
Answer
B. Suļ¬cient distance so as to be able to stop safely
96
In case a vehicle with more than two wheels has broken at a place where it can be recognised in time as a stationary vehicle, the reļ¬ective traļ¬c warning triangles shall be placed behind the broken down vehicle and at what distance?
Answer
B. 50 meters
97
The priority within the emergency vehicles with regard to right of way over all other vehicles.
Answer
D. First a ļ¬re service vehicle Second an ambulance Third a police vehicle Fourth any emergency management vehicle
98
What is Lane splitting (Lane within a lane)
Answer
C. Motorcyclists ļ¬lter between three and four wheeled vehicles in urban areas
99
Which of the following acts when done by a holder of a driving licence shall result in disqualiļ¬cation of driving licence (i) Theft of motor vehicle (ii) Carrying overload in goods carriages (iii) Failure to stop when signaled to do so by any person authorised to do so (iv) Transport of goods prohibited under any law
Answer
B. (i), (ii), (iii) and (iv)
100
Which of the following are correct? (i) The vehicle which is to overtake and the vehicle which is to be overtaken are both driving on a multi-lane road and the vehicle ahead can be safely overtaken in a marked lane to the left of the vehicle being overtaken (ii) The vehicle to be overtaken in either turning right or making a 'U' turn from the centre of the road and is giving a signal to turn and it would be safe to overtake it from the left (iii) The vehicle to be overtaken is stationary and it is safe to pass it from the left
Answer
A. (i), (ii) and (iii)
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