| Post Name | JR. INSTRUCTOR -TECHNICIAN MECHATRONICS - Industrial Training |
|---|---|
| Question Paper Code | 180/2024 |
| Category Code | 654/2023 |
| Date of Test | 20 December 2024 |
| Medium of Question | ENGLISH |
| Exam Type | OMR Examination |
| Total Questions | 100 |
1
In case of first aid ‘golden hour’ means :
Answer
C. First 30 minutes after accident took place
2
Which coloured bin is used for segregating glass waste?
Answer
A. Green
3
The reading accuracy of steel rule in British system of measurement is :
Answer
D. 1/64 inch
4
Of the following statements which is/are true about files?
(i) The upcut angle of a double cut flat file is 70 degree.
(ii) In a single cut file the cutting angle of teeth is 60 degree.
(iii) In file specification second cut is a grade of file.
Answer
B. (ii) and (iii) only
5
Which is wrong about metric outside micrometer?
(i) The working principle of micrometer is screw and thread.
(ii) In metric micrometer pitch of the spindle thread is 0.5 mm.
(iii) The work piece for measuring is mount between the anvil and thimble of an outside
micrometer.
(iv) The least count of a metric micrometer is 0.02 mm.
Answer
C. (iii) and (iv) only
6
The accuracy of vernier bevel protractor is :
Answer
D. 5 minutes
7
The metal particles get clogged in the pores of the grinding wheel while grinding soft
metals. This condition is called :
Answer
B. Loading
8
Which of the following statement is/are correct when describing a flat or spade drill?
(i) It is usually made from a piece of round tool steel which is forged to shape and
ground to size
(ii) While drilling using a flat drill, the chips come out from the hole automatically.
(iii) The flat or spade drill cannot be relied upon to drill a true straight hole.
Answer
D. Only (i) and (iii) correct
9
–––––––––––– is the angle included between the two lips projected upon a plane parallel
to the drill axis and parallel to the two cutting lips.
Answer
B. Point angle
10
In a ‘tap’, which of the following statement is/are correct?
(i) A tap which cuts while rotating in anticlockwise direction when viewed from
the entering end of the tap is termed as left hand tap.
(ii) A tap which cuts while rotating in clockwise direction when viewed from the
entering end of the tap is termed as right hand tap.
(iii) The end of the rougher tap has about 2 to 3 threads tapered.
(iv) The finisher tap has almost full threads for the whole of its length.
Answer
D. Only (iv) correct
11
What is the nearest drill size based on the given details. The diameter of tap or bolt is
10 mm, and pitch of thread is 1.5 mm?
Answer
A. 8.2 mm
12
In a drilling machine, which is not used as a work holding device?
Answer
B. Tapered spindle
13
By considering the size of a drilling machine, which of the following statement is /are
correct?
(i) A portable drilling machine is specified by the maximum diameter of the drill that
it can hold.
(ii) The sensitive drilling machines are specified by the diameter of the largest piece
that can be centred under the spindle.
(iii) The size of a radial drilling machine is specified by the diameter of column and
length of arm.
Answer
C. All of the above
14
Identify the correct statement regarding the vernier height gauge :
(i) The steel beam is graduated with the main scale in ‘mm’ as well as ‘inches’.
(ii) ‘jaw’ is not a part of Vernier height gauge.
(iii) The Vernier scale is attached to the main scale which has been graduated.
(iv) Vernier height gauge is used in conjuction with a surface plate.
Answer
D. Only (i), (iii) and (iv) correct
15
In a vernier bevel protractor, one main scale division equals :
Answer
C. 1 degree
16
Find out the RPM of the spindle for a 50 mm diameter bar to cut at 25 m/min :
Answer
A. 159
17
The portion left between the flutes are called :
Answer
A. land
18
What is the carbon percentage in cast iron?
Answer
A. 2 to 4%
19
Major constituent of carbide tool material is :
Answer
C. Tungsten carbide
20
As per the BIS system of limit and fits 10 H7/p6 represent :
Answer
D. Press fit
21
Which part of the lathe used to make steep taper on the workpiece?
Answer
A. Compound slide
22
To turn taper on a workpiece of having following dimensions Major diameter 34 and
minor diameter and 30 length 40, what will the amount of set over if the taper produced
is on entire length of workpiece?
Answer
C. 2
23
The pitch of the lead screw is 6 mm and pitch of the thread to be cut is 1.5 mm. What
will be the teeth of change gears?
Answer
B. Driver teeth 30 Driven teeth 120
24
Expression 50 H7/p6 represent a type of Fit. In this number “7” denotes :
Answer
D. Grade of tolerance of hole
25
What is the speed of the drill having 10 mm diameter to cutting sheet at 30 m/min
surface speed?
Answer
A. 955 RPM
26
Find the time required for one complete cut on a workpiece of diameter 30 mm and
length 300 mm at a cutting speed of 35 m/min, depth of cut is 0.8 mm per revolution and
work piece rotates at 370 RPM :
Answer
A. 1.013 min
27
The specification of lathe which define the maximum diameter of the workpiece that can
hold between centres is :
Answer
D. The swing diameter over carriage
28
Fine grained grinding wheels are used to grind :
Answer
A. Hard and brittle material
29
What is the time required for one complete cut using a face milling cutter of 200 mm
diameter across mild steel, block of 200 mm wide and 300 mm length? Feed given is
1 mm/rev. Total length of table travel taken as 420 mm. spindle speed is 250 m/min. :
Answer
Question Cancelled
30
Which of the following is NOT considered a basic block of a computer?
Answer
D. Power Supply
180/2024 6 A
31
The primary function of the ALU
Answer
B. Perform calculations and logical operations
32
Which part of the computer is responsible for executing instructions and performing
basic operations?
Answer
C. CPU
33
Which of the following components stores data temporarily for quick access by the CPU?
Answer
B. RAM
34
What is the primary function of the Control Unit
Answer
B. Fetch and decode instructions
35
Which of the following is responsible for the permanent storage of data on a computer?
Answer
C. Hard Disk Drive (HDD)
36
Which of the following input devices is primarily used for capturing text?
Answer
B. Keyboard
37
Two 120 V light bulbs are connected in series across a 240 V line. Light bulb L1 is
60 watts and L2 is 100 watts, how will be the bulb glows?
Answer
C. Bulb L1 will glow brighter than bulb L2
38
A 12 ohms resister is connect across 60 V DC source calculate the current flow through
the resistor:
Answer
D. 5A
A 7 180/2024
39
Why cells are connected in series?
Answer
A. To increase output voltage
40
Which one of the following is the SI unit of Flux?
Answer
B. Weber
41
Which one of the following reading is obtained in permanent magnet moving coil?
Answer
B. Only DC quantities
42
What is the purpose of capacitor in electric fan?
Answer
C. Give phase shift
43
Which one of the following statement is correct about the induces emf in DC motor?
Answer
B. It is opposite to the applied voltage
44
Which one of the following is the function of step up transformer?
Answer
A. To increase Voltage
45
Which one of the following implies a good earth continuity?
Answer
B. Low resistance
46
What is the height for fixing switch boards?
Answer
A. 1.5 meter
47
Which of the following diode contains a metal-semiconductor junction?
Answer
C. Schottky diode
48
How many inputs and outputs does a Full Adder have?
Answer
B. Three inputs, two outputs
49
Which one of the following is a ‘‘Date and Time’’ function in Excel?
Answer
D. NOW( )
50
An AC circuit resonates at 1000 kHz and has a quality factor of 100. The bandwidth and half-power points are
Answer
C. BW = 10 kHz, f₁ = 995 kHz, f₂ = 1005 kHz
51
What will be the feedback resistance RF of the Op-amp circuit, if R is 10 K Ω , voltage
gain AO = – 47 :
Answer
C. 470 K Ω
52
The IC 7476 is
Answer
B. JK FlipFlop
53
Voltage gain of an amplifier is 100 with negative feedback and feedback factor 0.04 the
gain will be :
Answer
A. 20
54
Voltage regulation of an ideal regulated power supply is :
Answer
C. 0%
55
Which of the following commands will move the number 27H into the accumulator?
Answer
C. MOV A, #27H
56
What will be the decimal equivalent of Hex number 3A.2F?
Answer
B. 58.1836
57
Which of the following is a type of pressure sensor?
Answer
C. Strain Gauge
58
What type of transducer used to convert linear motion into electrical signals?
Answer
D. Linear Variable Differential Transformer
59
What is the primary function of a load cell?
Answer
A. Measuring force
60
Which proximity sensors are used to detect only metal objects?
Answer
C. Inductive Sensor
61
Numerical control is :
Answer
B. A method for controlling by means of a set of instructions
62
Which of the following is not the advantage of CNC Machine?
Answer
D. Improved strength of components
63
In CNC machine which system is to record the data from the sensor and compare it with
input data?
Answer
A. Feed back system
64
In the block diagram of a CNC machine, data processing and control loop are a part of :
Answer
A. Machine control unit
65
G-code stands for geometric code, G codes are also known as :
Answer
B. Preparatory codes
66
Which of the following G-codes will give circular interpolation in a clock wise direction?
Answer
C. G02
67
Which of the following statement is/are correct about Pneumatics?
(i) The term ‘Pneumatics’ is taken from Greek language
(ii) Meaning of ‘Pneuma’ is Breathing
(iii) In Pneumatics, Compressible fluid is used
Answer
D. All of the above (i) (ii) and (iii)
68
Which of the following statement is/are correct about FRL Unit?
(i) FRL Unit maintain constant output pressure of Fluid
(ii) FRL Unit add oil into the compressed air
(iii) FRL Unit act as a safety valve in compressor
Answer
A. Only (i) and (ii)
69
Which of the following statement is/are correct about 3/2 control valve?
(i) 3/2 control valve has three ports
(ii) 3/2 control valve is used for actuating single acting cylinder
(iii) 3/2 control valve is used as a relief valve in compressor
Answer
A. Only (i) and (ii)
70
Which one of the following symbol indicates Filter in Pneumatic system?
Answer
D. A diamond shape inscribed with vertical Dotted line
71
In Pneumatic system, 5/3 control valve belongs to which one of the following category?
Answer
C. Direction control valve
72
Which one of the following valve is used for obtaining flow in one direction only?
Answer
B. Check valve
73
In Electro Pneumatic system, Which one of the following valve is used as interface
between the Electrical and Pneumatics system?
Answer
C. Solenoid valve
74
Which one of the following pressure valve is measured with respect to perfect Vacuum?
Answer
D. Absolute pressure
75
In Pneumatic system, Which one of the following valve indicate with a symbol including
minimum two combined square?
Answer
C. Direction control valve
76
Which one of the following is the power source of Pneumatic system?
Answer
A. Compressor
77
Example for axial flow pump is :
Answer
A. Screw pump
78
Component in hydraulic system that convert input shaft torque into fluid pressure is :
Answer
A. Oil pump
79
Hydraulic system component that convert fluid energy into mechanical energy is :
Answer
B. Actuator
80
Identify the direction control valve given in diagram :
Answer
C. 4/2 DCV
81
Valve that allow free flow in one direction and prevent flow in reverse direction is known
as :
Answer
B. Check valve
82
Flow in which control valve connected in series with cylinder control the input flow is
called :
Answer
B. Meter in
83
Device temporarily store hydraulic energy in the form of pressurized oil is
Answer
C. Accumulator
84
Whenever there is an increase in pressure at any point in a confined fluid, there is an
equal increase at every other point in the container. This law is :
Answer
B. Pascal’s law
85
The unit for volume flow rate of a fluid is :
Answer
D. Either
86
The continuity equation is related with conserving —————— in fluid flow.
Answer
C. Mass
87
The core part of PLC is :
Answer
A. CPU
88
The type of memory in PLC that is volatile in nature :
Answer
B. RAM
89
The electrical isolation in PLC from external environment is obtained by :
Answer
A. Opto coupler
90
SIMATIC programming software is the product of :
Answer
B. SIEMENS
91
The type of sensor that used to detect position / displacement for input in PLC is :
Answer
A. LVDT
92
Convert the given decimal number into binary 32 :
Answer
A. 100000
93
A number system with base value 16 is called :
Answer
B. Hexadecimal
94
The acronym PLC stands for :
Answer
D. Programmable logic controller
95
How many degrees of freedom does a rigid body free in 3D space have?
Answer
B. 6
96
Which tool is most effective for identifying the source of harmonic distortion in an
industrial power system?
Answer
A. Spectrum Analyzer
97
In a simulated electrical circuit, what effect does increasing the capacitance in an
LC circuit have on the resonant frequency?
Answer
D. Frequency decreases
98
During assembly, which test ensures that a hydraulic system is free of leaks before full
operation?
Answer
A. Static pressure test
99
What is the primary function of a resolver in a robotic drive system?
Answer
B. Detect motor shaft position
100
Which of the following end effectors comes under the category of grippers?
Answer
C. Scoops
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