MANUFACTURING AND PRODUCTION TECHNOLOGY QUIZ

Two streams of liquid metal which are not hot enough to fuse properly result into a casting defect known as

Sand wash

Scab

Cold shut

Swell

TRUE ANSWER : ?
YOUR ANSWER : ?

The cutting speed of a drill depends upon the

All of these

Material of drill

Type of material to be drilled

Quality of surface finish desired

TRUE ANSWER : ?
YOUR ANSWER : ?

In a shaper, the metal is removed during

Return stroke

Both the forward and return strokes

Forward stroke

Neither the forward nor the return stroke

TRUE ANSWER : ?
YOUR ANSWER : ?

A drill considered as a cutting tool having zero rake, is known as a

Tapered shank twist drill

Straight fluted drill

Parallel shank twist drill

Flat drill

TRUE ANSWER : ?
YOUR ANSWER : ?

The negative rake is usually provided on

Cemented carbide tools

High carbon steel tools

All of these

High speed steel tools

TRUE ANSWER : ?
YOUR ANSWER : ?

Ceramic tools are fixed to tool body by

Soldering

Clamping

Welding

Brazing

TRUE ANSWER : ?
YOUR ANSWER : ?

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

2 to 3 times lower

5 to 8 times higher

2 to 3 times higher

8 to 20 times higher

TRUE ANSWER : ?
YOUR ANSWER : ?

Thread grinding requires work speed from

10 to 14 m/min

5 to 10 m/min

1 to 3 m/min

14 to 20 m/min

TRUE ANSWER : ?
YOUR ANSWER : ?

The lathe centres are provided with standard taper known as

Chapman taper

Morse taper

Seller's taper

Brown and Sharpe taper

TRUE ANSWER : ?
YOUR ANSWER : ?

Work speed of circular electrode of 220 mm diameter for carrying out seam welding at 4 welds per cm on 1.6 mm thick mild steel tube. Welding cycle consists of 3 cycles ‘on’ and 2 cycles ‘off’ Power supply is at 50 Hz. Calculate R.P.M. and energy requirement of the above circular electrodes assuming effective resistance between electrodes as 100 ohm.

22 rpm, 600 joules

2.17 rpm, 600 joules

6.8 rpm, 6 joules

5.03 rpm, 600 joules

TRUE ANSWER : ?
YOUR ANSWER : ?

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