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Objective Questions

Latest BHEL Artisan Machinist Exam Question (Objective Questions), MCQ in English

Subjects : Trade Related Question (Machinist), Engineering Calculations, Test of Reasoning

Question Bank BHEL Artisan (Machinist) Exam - English
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Trade Related Question (Machinist)

Question 1Single Answer
What is the primary function of a slotter machine?
  1. A
    Drilling holes
  2. B
    Turning cylindrical parts
  3. C
    Cutting slots, keyways, and grooves
  4. D
    Grinding surfaces
Question 2Single Answer
How is a slotter classified based on its design?
  1. A
    Vertical and horizontal
  2. B
    Manual and automatic
  3. C
    Both a and c
  4. D
    Light-duty and heavy-duty
Question 3Single Answer
What is the working principle of a slotter?
  1. A
    Rotary motion of the workpiece
  2. B
    Oscillating motion of the table
  3. C
    Continuous feed motion
  4. D
    Reciprocating motion of the tool
Question 4Single Answer
Which part of the slotter houses the driving mechanism?
  1. A
    Base
  2. B
    Column
  3. C
    Ram
  4. D
    Table
Question 5Single Answer
What is a key safety precaution when operating a slotter?
  1. A
    Use high-speed cutting
  2. B
    Operate without guards
  3. C
    Ensure proper clamping of the workpiece
  4. D
    Ignore tool sharpness
Question 6Single Answer
What is the purpose of the rotary table in a slotter?
  1. A
    To hold the cutting tool
  2. B
    To adjust ram speed
  3. C
    To allow indexing for angular cuts
  4. D
    To cool the workpiece
Question 7Single Answer
How is indexing performed on a slotter’s rotary table?
  1. A
    Using a vernier scale
  2. B
    Using a manual lever
  3. C
    Using a digital counter
  4. D
    Using graduated divisions on the table
Question 8Single Answer
What is the function of the quick return mechanism in a slotter?
  1. A
    Increases cutting speed
  2. B
    Adjusts table feed
  3. C
    Reduces non-cutting time
  4. D
    Controls tool angle
Question 9Single Answer
What is the typical speed ratio of the quick return mechanism in a slotter?
  1. A
    1:1
  2. B
    3:2
  3. C
    2:1
  4. D
    4:3
Question 10Single Answer
Which job holding device is used to hold cylindrical workpieces on a slotter?
  1. A
    Vice
  2. B
    V-block
  3. C
    Parallel block
  4. D
    Clamp
Question 11Single Answer
What type of slotting tool is used for cutting keyways?
  1. A
    Round nose tool
  2. B
    Side and face cutter
  3. C
    Parting tool
  4. D
    Form tool
Question 12Single Answer
What is a key safety point to observe while working on a slotter?
  1. A
    Operate at maximum speed
  2. B
    Ignore machine guards
  3. C
    Leave tools loose
  4. D
    Wear appropriate personal protective equipment
Question 13Single Answer
What is a spline primarily used for in machining?
  1. A
    Decorative finishing
  2. B
    Transmitting torque between shafts
  3. C
    Holding workpieces
  4. D
    Cooling the tool
Question 14Single Answer
Which type of spline has teeth parallel to the axis?
  1. A
    Involute spline
  2. B
    Serrated spline
  3. C
    Straight-sided spline
  4. D
    Helical spline
Question 15Single Answer
What is the main component of a slotter’s ram?
  1. A
    Worktable
  2. B
    Cutting tool holder
  3. C
    Base
  4. D
    Feed mechanism
Question 16Single Answer
Which mechanism drives the ram in a slotter?
  1. A
    Crank and slotted link mechanism
  2. B
    Hydraulic drive
  3. C
    Pneumatic drive
  4. D
    Belt drive
Question 17Single Answer
What is the typical tool angle for a slotting tool?
  1. A
    5–10° rake angle
  2. B
    15–20° rake angle
  3. C
    25–30° rake angle
  4. D
    35–40° rake angle
Question 18Single Answer
Which job holding device is used for flat workpieces on a slotter?
  1. A
    Vice
  2. B
    V-block
  3. C
    Parallel block
  4. D
    Magnetic chuck
Question 19Single Answer
What is the primary advantage of a quick return mechanism in a slotter?
  1. A
    Improves machining efficiency
  2. B
    Increases tool life
  3. C
    Reduces workpiece weight
  4. D
    Simplifies indexing
Question 20Single Answer
Which type of spline is used for high-torque applications?
  1. A
    Straight-sided spline
  2. B
    Square spline
  3. C
    Serrated spline
  4. D
    Involute spline
Question 21Single Answer
Which tool is mainly used to produce a circular hole in solid metal?
  1. A
    Twist drill
  2. B
    Reamer
  3. C
    Tap
  4. D
    Die
Question 22Single Answer
What is the primary function of a tap in machining?
  1. A
    Cutting external threads
  2. B
    Enlarging a hole
  3. C
    Finishing a flat surface
  4. D
    Cutting internal threads
Question 23Single Answer
Which cutting tool is commonly used for producing external threads manually?
  1. A
    Tap
  2. B
    Reamer
  3. C
    Die
  4. D
    Counterbore
Question 24Single Answer
Which type of tap is generally used first in a hand-tapping sequence?
  1. A
    Taper tap
  2. B
    Plug tap
  3. C
    Bottoming tap
  4. D
    Machine tap
Question 25Single Answer
What is the approximate tap drill size for an M10 × 1.5 thread?
  1. A
    8.5 mm
  2. B
    7.5 mm
  3. C
    9.5 mm
  4. D
    10.5 mm
Question 26Single Answer
The distance between corresponding points of two adjacent screw threads is called:
  1. A
    Lead
  2. B
    Pitch
  3. C
    Depth
  4. D
    Diameter
Question 27Single Answer
Which tool is used to hold and turn a hand tap?
  1. A
    Die stock
  2. B
    Tap wrench
  3. C
    Drill chuck
  4. D
    Tool holder
Question 28Single Answer
What is the standard included angle of an ISO metric screw thread?
  1. A
    45°
  2. B
    60°
  3. C
    55°
  4. D
    90°
Question 29Single Answer
Which type of tap is suitable for cutting threads close to the bottom of a blind hole?
  1. A
    Taper tap
  2. B
    Pipe tap
  3. C
    Roughing tap
  4. D
    Bottoming tap
Question 30Single Answer
Why is cutting fluid applied during a tapping operation?
  1. A
    To increase friction
  2. B
    To increase thread pitch
  3. C
    To reduce friction and heat
  4. D
    To change the thread angle
Question 31Single Answer
What is the primary purpose of a reamer?
  1. A
    Producing external threads
  2. B
    Removing surface scale
  3. C
    Cutting a square hole
  4. D
    Finishing and sizing an existing hole accurately
Question 32Single Answer
Which material is commonly used for manufacturing precision reamers?
  1. A
    Lead
  2. B
    High-speed steel
  3. C
    Copper
  4. D
    Zinc
Question 33Single Answer
Which reamer is normally operated manually using a tap wrench?
  1. A
    Machine reamer
  2. B
    Shell reamer
  3. C
    Hand reamer
  4. D
    Chucking reamer
Question 34Single Answer
What is the purpose of the square end on the shank of a hand reamer?
  1. A
    Holding the reamer in a tap wrench
  2. B
    Measuring the hole depth
  3. C
    Increasing cutting speed
  4. D
    Removing chips automatically
Question 35Single Answer
Which operation generally produces better hole accuracy and surface finish?
  1. A
    Rough drilling
  2. B
    Punching
  3. C
    Reaming
  4. D
    Chipping
Question 36Single Answer
What is the recommended direction of rotation for a standard right-hand cutting reamer?
  1. A
    Alternating clockwise and anticlockwise
  2. B
    Anticlockwise when viewed from the shank end
  3. C
    Clockwise when viewed from the shank end
  4. D
    Random rotation
Question 37Single Answer
Why should a reamer generally not be rotated backward inside a hole?
  1. A
    It increases the diameter automatically
  2. B
    It increases spindle speed
  3. C
    It may damage the cutting edges
  4. D
    It improves surface finish
Question 38Single Answer
Which type of reamer is designed for use in a drilling or milling machine?
  1. A
    Machine reamer
  2. B
    Hand reamer
  3. C
    Adjustable hand reamer
  4. D
    Expansion hand reamer
Question 39Single Answer
What is the usual purpose of leaving a small machining allowance before reaming?
  1. A
    To provide material for accurate finishing
  2. B
    To produce external threads
  3. C
    To reduce the hole diameter below drill size
  4. D
    To increase drill point angle
Question 40Single Answer
A hole is to be finished to 12 mm diameter by reaming. If 0.2 mm diametral allowance is selected, what should be the drilled hole diameter?
  1. A
    11.2 mm
  2. B
    12.8 mm
  3. C
    12.2 mm
  4. D
    11.8 mm
Question 41Single Answer
Which component of a twist drill forms the main cutting edges?
  1. A
    Flutes and point geometry
  2. B
    Shank
  3. C
    Tang
  4. D
    Neck only
Question 42Single Answer
What is the usual point angle of a standard general-purpose twist drill for mild steel?
  1. A
    60°
  2. B
    118°
  3. C
    90°
  4. D
    180°
Question 43Single Answer
What is the main purpose of flutes in a twist drill?
  1. A
    Increasing workpiece hardness
  2. B
    Removing chips and allowing cutting fluid access
  3. C
    Holding the drill in a vice
  4. D
    Measuring hole diameter
Question 44Single Answer
Which part of a twist drill is used for holding it in a machine?
  1. A
    Shank
  2. B
    Point
  3. C
    Lip
  4. D
    Web
Question 45Single Answer
What is the function of the margin on a twist drill?
  1. A
    Guiding the drill in the hole
  2. B
    Forming screw threads
  3. C
    Increasing drill length
  4. D
    Holding the drill chuck
Question 46Single Answer
A taper shank drill is commonly fitted directly into which machine component?
  1. A
    Parallel vice
  2. B
    Milling arbor
  3. C
    Flat tool rest
  4. D
    Matching tapered spindle socket
Question 47Single Answer
Which tool is normally used to remove a taper shank drill from a spindle sleeve?
  1. A
    Centre punch
  2. B
    Drill drift
  3. C
    Hand reamer
  4. D
    Thread gauge
Question 48Single Answer
Which operation is performed to provide a conical seat for a countersunk screw?
  1. A
    Counterboring
  2. B
    Reaming
  3. C
    Spot facing
  4. D
    Countersinking
Question 49Single Answer
What is the purpose of counterboring?
  1. A
    Making a conical recess
  2. B
    Increasing the length of a drill
  3. C
    Producing a tapered external thread
  4. D
    Making a cylindrical recess with a flat bottom
Question 50Single Answer
Which operation produces a flat seating surface around a hole?
  1. A
    Knurling
  2. B
    Spot facing
  3. C
    Tapping
  4. D
    Grooving
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