For casting of turbine blades made of high temp and high strength alloys, the most suitable process is

A steel plate $$40cm \times 30cm \times 0.3cm$$ is to be cast. The volume shrinkage of steel during solidification is $$3\% .$$ A cylindrical side riser with diameter $$4cm$$ and height $$4cm$$ is used. The riser volume should at least be $$3$$ times that the dictated by shrinkage consideration. Is the riser volume sufficient if not what is the riser size?

When there is no room temp change, the total shrinkage allowance on a pattern is INDEPENDENCE OF

The problem of shrinkage cavity is more likely to occur while casting ......... A ............ B.......... a chill block

(A.) metal / plastic , (B.) with / without.

The mode of metal transfer in $$C{O_2}$$-$$MIG$$ welding at low temperature is

With increasing joint thickness, the tensile strength of a brazed joint

In $$TIG$$ welding a ...........A. .......... and ..........B.......... electrode is used.

A. non-consumable / consumable
B. coated / bare

A single point cutting tool with $${12^0}$$ rake angle is used for orthogonal machining of a ductile material. The shear plane angle for the theoretically minimum possible shear strain to occur

$$A\,\,2{1 \over 2}\,\,$$ control in a typical $$CNC$$ machine provides

Use of a robot for spray painting is primarily justified for improved.... ....... .... A ...... and reduced......... B....................

A. productivity / consistency
B. cost / hazard

The most common interpolation methods in continuous path $$NC$$ machining are

The base of a brass bracket has to be rough ground to remove the unevenness. The $$4$$ wheels available in the store. The appropriate wheel is

A milling cutter having $$8$$ teeth is rotating at $$100$$ $$rpm.$$ The work piece feed is set at $$40mm/min$$. The feed per tooth is

The diameter and rotational speed of a job are $$100mm$$ and $$500$$ $$rpm$$ respectively. The high spots (chatter marks) are found at a spacing of $$30$$ $$deg$$ on the job surface. The chatter frequency is

For cutting double start screw threads of pitch $$2.0$$ $$mm$$ on a lathe, the thread cutting tool should have a feed rate of

Reamer is designed to have even number of flutes to:

The following data apply to machining a part on turret lathe and a general purpose lathe

The setup cost and the cost for special tooling on the turret lathe would be $$Rs.3000/-.$$ These costs are negligible on the general purpose lathe. Calculate the batch seize which justifies the use of turret lathe.

A parting tool has a ground front clearance angle of $${6^0}$$ and the back rake angle of $${10^0}$$. The tool, by mistake, was set $$1.5$$ $$mm$$ above the line of centers while machining a job of $$50$$ $$mm$$ out-side diameter.

The diameter of the job at which, while parting, the tool will start rubbing

A parting tool has a ground front clearance angle of $${6^0}$$ and the back rake angle of $${10^0}$$. The tool, by mistake, was set $$1.5$$ $$mm$$ above the line of centers while machining a job of $$50$$ $$mm$$ out-side diameter.

The effective rake and clearance angle are

$$BUE$$ formation ......A... the cutting force and ......B...... the surface finish

(a) decreases/ increases
(b) spoils / improves

In comparison to $$HSS$$, super $$HSS$$ contains higher percentage of

Calculate the smallest punch diameter that can be designed for piercing sheet metal strip with the following data. Crushing strength of the punch material is $$1500$$ $$MPa.$$ Thickness of the sheet is $$2$$ $$mm,$$ factor of safety is $$3,$$ and shear strength of the sheet material $$500$$ $$MPa$$ is

A steel wire of length $$100$$ $$m$$ and diameter $$12.214$$ $$mm$$ is drawn to a final diameter of $$10mm.$$ Tensile tests of specimen made before and after the drawing operation gave yield stress as $$200$$ $$MPa$$ and $$400$$ $$MPa$$ respectively,

The yield stress of the steel at a true stain $$0.2,$$ by assuming linear strain hardening law.

A steel wire of length $$100$$ $$m$$ and diameter $$12.214$$ $$mm$$ is drawn to a final diameter of $$10mm.$$ Tensile tests of specimen made before and after the drawing operation gave yield stress as $$200$$ $$MPa$$ and $$400$$ $$MPa$$ respectively,

The length of drawn wire is

While rolling a strip the peripheral velocity of the roll is ..... A .... than the entry velocity of the strip and is ...... B .... the exit velocity of the strip
A. greater / less / equal to
B. greater than / less than / equal to

Semi brittle materials can be extruded by

Assertion (A): Basic hole system is advocated by Indian Standards for fit design
Explanation (E): Holes can be produced to any size.