| Post Name | Drilling Assistant (SR for SC/ST) - Ground Water |
|---|---|
| Question Paper Code | 136/2023/OL |
| Category Code | 314/2021 |
| Date of Test | 4 August 2023 |
| Exam Type | Online Examination |
| Total Questions | 100 |
1
Which of the following statement is/are true with the scraper? i. Scraping is done before machining or ļ¬ling ii. The overall length of blade and handle of a scraper may range from 150 to 500 mm iii. For work of average hardness blade of scraper is held at an angle about 30Ā° to surface
Answer
D. Only (ii and iii)
2
Which of the statement is/are true with the calipers? i. Calipers cannot read the sizes themselves but measurement taken by them can be read by transferring the sizes on to a steel rule ii. A ļ¬rm joint caliper consists of two legs that are ļ¬xed together with a spring iii. An inside caliper has its leg bend outwards
Answer
B. Only (i and iii)
3
Which of the statement is/are true with the precision measuring instruments? i. A universal vernier caliper is used to measure the inside, outside and depth dimensions with a least count of 0.002mm ii. The least count of vernier bevel protractor is 5 seconds iii. In a vernier caliper 9 main scale divisions are equally divided into 10 vernier scale divisions. One main scale division is equal to 1 mm, then the least count of this vernier caliper is 0.1mm
Answer
C. Only (iii)
4
Which of the statement is/are true with the marking tools? i. A universal surface gauge is used to scribe lines parallel to a datum surface ii. A universal surface gauge is used to set the job on machines parallel to a datum surface iii. Angle of centre punch is 90Ā°
Answer
A. All of the above (i, ii and iii)
5
Which of the following statement is/are not true with the work holding device - vices? i. In a bench vice, to hold a ļ¬nished work, soft jaws made of brass over the regular jaws ii. In a pipe vice, the screw is horizontal and movable so the jaw works vertically iii. The length of hand vice varies from 125 mm to 150 mm
Answer
D. Only (i and ii)
6
Which of the statement is/are true with the type of screw drivers? i. Screw drivers are speciļ¬ed according to the length of blade and thickness of tip ii. Screw drivers are speciļ¬ed according to the length of blade and width of tip iii. The normal width of blade varies from 5 mm to 8 mm
Answer
B. Only (ii)
7
Which of the following statement is/are not true with the spanners? i. In British system the nominal size of bolt or nut is used to identify the spanner ii. The adjustable spanner has its jaws set at an angle of 45Ā° to the handle iii. Normally spanners have a length that is about ten times the width of the jaw opening
Answer
A. Only (ii)
8
Which of the statement is/are true with the type of pliers? i. In a combination plier pipe grip is serrated for gripping square shaped objects ii. A ļ¬at nose plier is used for bending and folding narrow strips of thin metals iii. Slip joint pliers have various ranges of jaw opening
Answer
B. Only (ii and iii)
9
Which of the statement is/are true with the drilling machine? i. The sensitive bench drilling machine is capable of drilling holes upto 20 mm diameter ii. The drills are provided with morse taper iii. When the drill taper shank is bigger than the machine spindle, taper sockets are used
Answer
C. Only (ii and iii)
10
Which of the statement is/are true with the hand taps and dies? i. In a set of hand taps, there are three number of taps available ii. The intermediate tap is provided with a taper of 14Ā° iii. Dies are used for producing internal standard 'V' threads
Answer
D. Only (i and ii)
11
Which one of the following statements is false?
Answer
A. Multi metre can be used to measure current, voltage and resistance of a powered circuit.
12
Which one of the following statements is true?
Answer
B. In a series circuit, the sum of voltage drops across the individual resistance equals to the applied voltage
13
Which of the following circuit does not protected with fuse?
Answer
D. Starting circuit
14
Piezo electric eļ¬ect of a material is the ability to
Answer
A. Generate electric ļ¬eld in response to mechanical stress
15
Which of the following is not a cause of sulphation of plates in lead acid battery?
Answer
C. Loose battery terminals
16
Which of the following material can be suitably used as dopant to add to pure germanium or silicon atom for making P-type semi conductor?
Answer
D. Alluminium
17
Which following statement is false related to alternator assembly used in automobiles?
Answer
A. Modern alternator need current regulator and no need of voltage regulator
18
Proximity sensors are used in vehicles for
Answer
B. parking assisting system
19
The chemical name of R134a is
Answer
C. Tetraļ¬uoro ethane
20
The diaphragm of vacuum advance mechanism is mechanically connected to
Answer
B. Base plate
21
In case of a three axle vehicle, the wheel base is the distance measured horizontally and parallel to the longitudinal axis of the vehicle
Answer
B. between the centre of front axle and centre point between two rear axle
22
The range extender used in electric vehicle is a
Answer
C. Fuel based auxiliary power unit
23
Which one of the following is not consider for the selection motors of modern electric cars?
Answer
D. Types and durability of brushes used
24
In Kerala, maximum permissible speed limit of motor vehicles used for carriage of passenger comprising not more than eight seats in addition to driver seat, in 4 lane National Highway outside corporation or municipality limits unless the authority not prescribed to limit the speed is
Answer
C. 100 km/hour
25
The eļ¬ciency of brush less DC motor is in the range of
Answer
D. 80-90%
26
Which one of the following material is not used for the preparation of electrolyte of lithium iron battery?
Answer
A. Lithium iron phosphate solution
27
Which of the following is incorrect?
Answer
C. BHP is the power developed in the engine cylinder
28
Which of the following is true for V-engines?
Answer
C. The engine height is lower
29
"Check engine light" when appear ON, in the dash board indicate
Answer
D. All of these
30
Balancing coil type oil pressure guage is
Answer
C. Electric type
31
Rotating the engine crankshaft at minimum speed of 100 r.p.m. to start the engine is called
Answer
A. Cranking
32
What is provided at the end of valve stem?
Answer
B. Groove is provided to hold the spring lock
33
Which of the following is true for valve timing is engines?
Answer
D. Inlet valve closes after BDC
34
Diagonal cut joint is associated with
Answer
B. Compression ring
35
The gap between the ring and the groove in the piston for compression rings
Answer
C. Is usually 0.038 - 0.102 mm
36
Material for crank shaft is
Answer
C. Nickel Chrome Molybdenum Steel
37
Fly Wheel is provided at the
Answer
A. Rear of engine
38
Crank shaft main bearings are provided with
Answer
B. Locking lip and oil groove on it
39
Which of the following characteristics is required for Pistons?
Answer
C. Good conductor of heat
40
Which engine part is commonly provided in the cylinder head?
Answer
D. Valves
41
Where is the thermostat valve ļ¬tted in pressurized cooling system?
Answer
D. Water outlet of cylinder head
42
Percentage of fuel energy lost to the cylinder walls in an automobile engine is approximately
Answer
B. 30%
43
In which type of radiator cores upper and lower tank are connected by tubes, and ļ¬ns are provided around this?
Answer
A. Tubular type
44
In which type of engine, Keel cooling system is generally used?
Answer
C. Marine engines
45
The vacuum valve inside the radiator pressure cap is usually set to operate when the vacuum exceeds about
Answer
A. 5 kPa
46
Which of the following is a commonly used corrosion inhibitor in engine coolant?
Answer
B. Chromates
47
While engine working, the oil warning light provided on the dash board comes on, it means
Answer
C. Low oil pressure
48
Which type of lubrication system used a scavenge pump?
Answer
D. Dry sump lubrication
49
The temperature at which lubricating oil will began to burn continuously on applying a ļ¬ame is called
Answer
B. Fire point
50
Which of the following chemical substance are added to lubricating oil as anti-forming additives?
Answer
C. Polyorganosiloxanes
51
The friction that occurs between the layers of oil in an oil ļ¬lm is called
Answer
A. Viscous friction
52
What is the probable cause of engine over heating?
Answer
D. All of these
53
Which part reduced the emission from the exhaust gases?
Answer
A. Catalytic converter
54
Which part reduced the noise of exhaust gases by reducing the pressure of exhaust gases by slow expansion and cooling?
Answer
A. Muļ¬er
55
What is the name of device which helps to increase the pressure of the air fuel mixture from the carburetor before it enters in to the engine cylinder?
Answer
C. Superchargers
56
What is the average rpm of a centrifugal type supercharger?
Answer
D. 10000
57
Where is turbocharger mounted in the vehicle?
Answer
B. On the exhaust manifold
58
What is FGT?
Answer
A. Fixed Geometry Turbochargers
59
Which part of the fuel reacts with other components in the atmosphere to produce photo-chemical smog?
Answer
C. Hydrocarbon
60
What is the name of valve provided to collect crankcase vapors and gases back to the intake manifold vacuum?
Answer
D. PCV
61
What is the purpose of exhaust gas recirculation (EGR) system?
Answer
D. To reduce NOx
62
What is the process of Selective Catalytic Reduction (SCR)?
Answer
A. NOx contained in the diesel exhaust are reduced into Nitrogen and water
63
Diesel fuel is injected into the combustion chamber of a diesel engine
Answer
B. At the end of compression stroke
64
Which of the following character is the ability of the fuel to evaporate?
Answer
C. Volatility
65
Why is there a vent hole provided either in ļ¬ller neck or cap in an engine fuel tank?
Answer
D. To maintain atmospheric pressure
66
Which of the following statement is/are correct about construction of a plunger type fuel feed pump in a diesel engine? i. The fuel feed pump consists of a barrel, a plunger and plunger return spring. ii. The fuel feed pump consists of spindle, roller tappet, suction and delivary valve iii. The fuel feed pump consists of plunger, plunger return spring and glass wool or steel wool
Answer
C. Only (i and ii)
67
Which of the following sensors are fail, the engine will not start?
Answer
B. TP and CKP
68
What is the name of the pipe line from FIP to Injector in a diesel fuel feed system?
Answer
D. High pressure pipe
69
How much pressure does the high pressure pump develop in a CRDI engine?
Answer
A. 1000 - 2000 bar
70
What is the primary purpose of a Variable Intake Manifold system in a Electronic Fuel Injection?
Answer
B. To enhance the volumetric eļ¬ciency
71
It is small ļ¬ltering device used to remove water from the diesel fuel before it reaches to the sensitive parts of the diesel engine
Answer
A. Diesel fuel water separator
72
Which of the following statement is/are correct about IACV in a EFI engine? i. It controls the amount of air bypassing the throttle plate to maintain the desired idle speed ii. It is a stepper motor or a solenoid operated valve, located on or near the throttle body iii. The ECU sends signals to the IACV to open or close in response to changing engine conditions
Answer
D. All of the above (i, ii and iii)
73
MAP sensor measure the
Answer
B. Intake manifold pressure
74
The malfunction indicator lamp in an EFI system, also known as
Answer
A. Check engine lamp
75
Which of the following cause is low oil pressure in an engine?
Answer
A. Stainer pipe mounting loose
76
What is the result of defective fuel feed pump is an engine?
Answer
C. Low power generation
77
Tyre's inner edge will wear out faster due to
Answer
D. Negative camber
78
Which of the following gears produced axial thrust while transmitting torque?
Answer
B. Helical gear
79
In these types of wheel cylinder, both brake shoes becomes leading shoe in the forward direction
Answer
A. Single piston wheel cylinder
80
This is intended to damp torsional vibrations of the crankshaft generated by the periodic cycles of engine
Answer
C. Dual mass ļ¬ywheel
81
It is provided in the torsion bar suspension system to adjust the height of the lower control arm
Answer
B. Eye bolt adjuster
82
A typical tripod constant velocity joint permit ________ degrees of angular articulations.
Answer
D. 26
83
When a tyre has a 215/65R 15 89 H rating on the side wall, the H indicate?
Answer
C. Speed index
84
In the ball and trunnion type universal joint a ball head is ļ¬xed at the end of the propeller shaft by a
Answer
A. Pin
85
The shock absorber dissolve can be reduced by pressurising the ļ¬uid with _______ gas.
Answer
C. Nitrogen
86
Driving and braking thrust are transmitted to the vehicle frame with the help of _______ in a Hotchkiss drive.
Answer
A. Leaf springs
87
Which among the following steering gear box provides a variable steering gear ratio?
Answer
D. Worm and roller
88
In these types of axle assembly, the axle shaft takes only the driving thrust and the vehicle load is taken by the axle housing
Answer
B. Fully ļ¬oating
89
It is the percentage ratio between diļ¬erence of vehicle speed and wheel speed to vehicle speed
Answer
A. Slip ratio
90
Limited slip diļ¬erential has a series of friction and steel plates packed between the
Answer
D. Sun gear and cage
91
The sensor used by the ABS for measuring the deceleration rate of the vehicle, whenever brakes are applied
Answer
B. G-Sensor
92
Stationary part of an epicyclic gear box with reverse gear is its
Answer
C. Planet carrier
93
1 Foot = _______ metre
Answer
A. 0.3048
94
Square root of 1024 is
Answer
B. 32
95
If 6 labourers earn Rs. 450 in 1 hr how much will earn 8 labourers in 1 hr?
Answer
B. 600
96
35 litres of water is taken out from a tank containing 200 litres of water. Find out the percentage of water taken.
Answer
C. 17.5%
97
Melting temperature of copper is
Answer
B. 1083Ā°C
98
Which of the following is not true?
Answer
A. mass is always equal to weight
99
A body travels at a distance of 112 metres in a straight line in 8 seconds. What velocity the body is travelling?
Answer
C. 14 M/Sec.
100
The action of a force on a unit area of the body on which it acts is termed as
Answer
D. Pressure
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