Home
Current Affairs January 2024

What is the correct answer?

4

The chuck preferred for quick setting and accurate centering of a job is

A. Four jaw independent chuck

B. Collect chuck

C. Three jaw universal chuck

D. Magnetic chuck

Correct Answer :

B. Collect chuck


Related Questions

What is the correct answer?

4

Larger end cutting edge angle _________ tool life.

A. Increases

B. Decreases

C. Does not effect

D. None of these

What is the correct answer?

4

If the tearing efficiency of a riveted joint is 50%, then ratio of rivet hole diameter to the pitch of rivets is

A. 0.20

B. 0.30

C. 0.50

D. 0.60

What is the correct answer?

4

For turning internal tapers, the suitable method is

A. By a form tool

B. By setting over the tail stock

C. By a taper turning attachment

D. By swivelling the compound rest

What is the correct answer?

4

Two 1 mm thick steel sheets are to be spot welded at a current of 5000 A. Assuming effective resistance to be 200 μm and current flow time of 0.2 second, heat generated during the process will be

A. 0.2 Joule

B. 1 Joule

C. 5 Joule

D. 1000 Joule

What is the correct answer?

4

While current is shut down in the welding circuit, what kind of voltage exists between the output terminals of the welding machine?

A. GTAW

B. Open air cut voltage

C. Kerf

D. Gouging

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

In machining metals, surface roughness is due to

A. Feed marks or ridges left by the cutting tool

B. Fragment of built-up edge on the machined surface

C. Cutting tool vibrations

D. All of these

What is the correct answer?

4

The correct sequence of tool materials in increasing order of their ability to retain their hot hardness is

A. Carbide, ceramic, cermet, borazon

B. Ceramic, carbide, borazon, cermet

C. Cermet, carbide, ceramic, borazon

D. Borazon, ceramic, carbide, cermet

What is the correct answer?

4

The size of a shaper is given by

A. Stroke length

B. Motor power

C. Mass of machine

D. Rate size

What is the correct answer?

4

High speed steel cutting tools operate at cutting speeds _________ than carbon steel tools.

A. 2 to 3 times lower

B. 2 to 3 times higher

C. 5 to 8 times higher

D. 8 to 20 times higher

What is the correct answer?

4

What is the name of the device used in arc welding circuits for the purpose of modifying the rate of current change when the weld road is varied rapidly?

A. Reactor

B. Kerf

C. Inductor

D. Cone

What is the correct answer?

4

In the relation VTn = C, the value of n for carbide tools is

A. 0.1 to 0.2

B. 0.20 to 0.25

C. 0.25 to 0.40

D. 0.40 to 0.55

What is the correct answer?

4

In a gating system, the ratio 1: 2: 4 represents

A. Sprue base area: runner area: ingate area

B. Pouring basin area: ingate area: runner area

C. Sprue base area: ingate area: casting area

D. Runner area: ingate area: casting area

What is the correct answer?

4

The broaching operation in which the work moves past the stationary tool is called

A. Pull broaching

B. Push broaching

C. Surface broaching

D. Continuous broaching

What is the correct answer?

4

A single point thread cutting tool should ideally hav

A. Zero rake angle

B. Positive rake angle

C. Negative rake angle

D. Point angle

What is the correct answer?

4

The angle between the shear plane and __________ is called shear angle.

A. Work surface

B. Tool face

C. Machine surface

D. None of these

What is the correct answer?

4

The chuck used for setting up of heavy and irregular shaped work should be

A. Four jaw independent chuck

B. Three jaw universal chuck

C. Magnetic chuck

D. Drill chuck

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

Gear finishing operation is called

A. Shaping

B. Milling

C. Hobbing

D. Burnishing

What is the correct answer?

4

It is desired to perform the operations like drilling, reaming, counter-boring etc. on a work piece. Which of the following machine will be used?

A. Sensitive drilling machine

B. Radial drilling machine

C. Gang drilling machine

D. Multiple spindle drilling machine

What is the correct answer?

4

The effect of setting a boring tool above centre height leads to

A. Increase in the effective rake angle and a decrease in the effective clearance angle

B. Increase in both effective rake angle and effective clearance angle

C. Decrease in the effective rake angle and an increase in the effective clearance angle

D. Decrease in both effective rake angle and effective clearance angle

What is the correct answer?

4

Flank wear occurs mainly on the

A. Nose part, front relief face and side relief face of the cutting tool

B. Face of the cutting tool at a short distance from the cutting edge

C. Cutting edge only

D. Front face only

What is the correct answer?

4

The lathe spindles at the nose end have

A. Internal screw threads

B. External screw threads

C. No threads

D. Tapered threads

What is the correct answer?

4

In machining metals, chips break due to __________ of work material.

A. Toughness

B. Ductility

C. Elasticity

D. Work hardening

What is the correct answer?

4

The material property which depends only on the basic crystal structure is

A. Fatigue strength

B. Work hardening

C. Fracture strength

D. Elastic constant

What is the correct answer?

4

During normalizing process of steel, the specimen is heated

A. Between the upper and lower critical temperature and cooled in still air.

B. Above the upper critical temperature and cooled in furnace.

C. Above the upper critical temperature and cooled in still air.

D. Between the upper and lower critical temperature and cooled in furnace.

What is the correct answer?

4

If the helix angle of the drill is made _________ 30°, then the torque required to drive the drill at a given feed will be more.

A. Equal to

B. Less than

C. More than

D. None of these

What is the correct answer?

4

The hard grade grinding wheels are denoted by the letters

A. A to H

B. I to P

C. Q to Z

D. A to P

What is the correct answer?

4

With the same tool life, the maximum material per minute is removed by

A. Increasing the cutting speed

B. Decreasing the cutting speed

C. Increasing the depth of cut

D. Increasing the feed rate

What is the correct answer?

4

In order to grind soft material

A. Coarse grained grinding wheel is used

B. Fine grained grinding wheel is used

C. Medium grained grinding wheel is used

D. Any one of these