Home
Current Affairs January 2024

What is the correct answer?

4

In drilling brass, a drill with

A. Zero helix angle is used

B. Low helix angle is used

C. High helix angle is used

D. Any helix angle can be used

Correct Answer :

B. Low helix angle is used


Related Questions

What is the correct answer?

4

The point angle of a drill, for drilling stainless steel, is

A. 90°

B. 118°

C. 135°

D. 150°

What is the correct answer?

4

In a shaper, the length of stroke is increased by

A. Increasing the centre distance of bull gear and crank pin

B. Decreasing the centre distance of bull gear and crank pin

C. Increasing the length of the arm

D. Decreasing the length of the slot in the slotted lever

What is the correct answer?

4

Internal gears can be made by

A. Hobbing

B. Shaping with pinion cutter

C. Shaping with rack cutter

D. Milling

What is the correct answer?

4

During the execution of a CNC part program block NO20 GO2 X45.0 Y25.0 R5.0 ; the type of tool motion will be

A. Circular Interpolation − clockwise

B. Circular Interpolation − counter clockwise

C. Linear Interpolation

D. Rapid feed

What is the correct answer?

4

A left hand tool on a lathe cuts most efficiently when it travels

A. From left to right end of the lathe bed

B. From right to left end of the lathe bed

C. With the help of a compound slide

D. Across the bed

What is the correct answer?

4

A push broach as compared to pull broach

A. Has less number of teeth

B. Is short and stocky

C. Removes less material for each pass of the tool

D. All of the above

What is the correct answer?

4

In reaming process

A. Metal removal rate is high

B. High surface finish is obtained

C. High form accuracy is obtained

D. High dimensional accuracy is obtained

What is the correct answer?

4

The ductile materials, during machining, produce

A. Continuous chips

B. Discontinuous chips

C. Continuous chips with built up edge

D. Either (A) or (C)

What is the correct answer?

4

Ceramic cutting tools are

A. Made by cold pressing of aluminium oxide powder

B. Available in the form of tips

C. Brittle and have low bending strength

D. All of these

What is the correct answer?

4

Which among the NC operations given below are continuous path operations? Arc Welding (AW), Drilling (D), Laser Cutting of Sheet Metal (LC), Milling (M), Punching in Sheet Metal (P), Spot Welding (SW)

A. AW, LC and M

B. AW, D, LC and M

C. D, LC, P and SW

D. D, LC, and SW

What is the correct answer?

4

A coarse grained grinding wheel is used to grind

A. Hard and brittle materials

B. Soft and ductile materials

C. Hard and ductile materials

D. Soft and brittle materials

What is the correct answer?

4

In which type of welding a gas shield, a consumable electrode is used and the welding can be done in all positions.

A. ARC welding

B. Submerged ARC welding

C. TIG welding

D. MIG welding

What is the correct answer?

4

When two main plates are kept in alignment butting each other and riveted with cover plate on both sides of the main plates with two rows of rivets in each main plate, the joint is known as _______ double cover butt joint.

A. Single riveted

B. Double riveted

C. Both (A) and (B)

D. None of these

What is the correct answer?

4

The operation of making a cone-shaped enlargement of the end of a hole is known as

A. Counter-sinking

B. Counter-boring

C. Trepanning

D. Spot facing

What is the correct answer?

4

In hot machining, tool is made of

A. Tungsten carbide

B. Brass or copper

C. Diamond

D. Stainless steel

What is the correct answer?

4

A jig is defined as a device which

A. Holds and locates a workpiece and guides and controls one or more cutting tools

B. Holds and locates a workpiece during an inspection or for a manufacturing operation

C. Is used to check the accuracy of workpiece

D. All of the above

What is the correct answer?

4

A twist drill is specified by its

A. Shank, material and diameter

B. Shank, lip angle and size of flute

C. Material, length of body and helix angle

D. Any one of these

What is the correct answer?

4

A lathe with four steps on the cone pulley and with back-gears will have

A. Four direct speeds

B. Four indirect speeds

C. Four direct and four indirect speeds

D. Eight indirect speeds

What is the correct answer?

4

For machining a cast iron workpiece by a high speed steel tool, the average cutting speed is

A. 10 m/min

B. 15 m/min

C. 22 m/min

D. 30 m/min

What is the correct answer?

4

In a shaper, the metal is removed during

A. Forward stroke

B. Return stroke

C. Both the forward and return strokes

D. Neither the forward nor the return stroke

What is the correct answer?

4

In ECM, the material removal is due to

A. Corrosion

B. Erosion

C. Fusion

D. Ion displacement

What is the correct answer?

4

Which of the following parameters govern the value of shear angle in continuous chip formation?

A. True feed

B. Chip thickness

C. Rake angle of the cutting tool

D. All of these

What is the correct answer?

4

Small nose radius

A. Increases tool life

B. Decreases tool life

C. Produces chipping and decreases tool life

D. Results in excessive stress concentration and greater heat generation

What is the correct answer?

4

In DC arc welding, if leads are arranged in work as Negative pole of the welding arc and electrode as Positive pole of the welding arc, the arrangement is known as

A. Fusion

B. Reverse polarity

C. Forward welding

D. Direct polarity

What is the correct answer?

4

The abrasive slurry used in ultrasonic machining contains fine particles of

A. Aluminium oxide

B. Boron carbide

C. Silicon carbide

D. Any one of these

What is the correct answer?

4

If a particular Fe-C alloy contains less than 0.83% carbon, it is called

A. High speed steel

B. Hypo eutectoid steel

C. Hyper eutectoid steel

D. Cast iron

What is the correct answer?

4

The factor responsible for the formation of continuous chips with built up edge is

A. Low cutting speed and large rake angle

B. Low cutting speed and small rake angle

C. High cutting speed and large rake angle

D. High cutting speed and small rake angle

What is the correct answer?

4

Larger than 15° side cutting edge angle

A. Increases tool life

B. Decreases tool life

C. Produces chipping and decreases tool life

D. Results in excessive stress concentration and greater heat generation

What is the correct answer?

4

A fixture is defined as a device which

A. Holds and locates a workpiece and guides and controls one or more cutting tools

B. Holds and locates a workpiece during an inspection or for a manufacturing operation

C. Is used to check the accuracy of workpiece

D. All of the above

What is the correct answer?

4

The cutting speed is maximum while machining __________ with a high speed steel tool.

A. Cast iron

B. Mild steel

C. Brass

D. Aluminium