Important MCQs (Production Engg.)

1-The reaction, in which one solid phase splits into two solid phases on heating, is called

(A) Eutectic

(B) Peritectic

(C) Eutectoid

(D) Peritectoid

 

2-Chemical embossing process is basically

(A) An etching process

(B) Electroplating process

(C) Galvanising process

(D) Engraving process

 

3-In Taylor’s tool life equation, VTn=C, index ‘n’ depends upon

(A) Material of work piece

(B) Condition of machine

(C) Material of tool

(D) Coolant used

 

4-Time taken to drill a hole through a 25mm thick plate at 300rpm at a feed rate of 0.25mm/revolution will be

(A) 20 sec

(B) 0.2 sec

(C) 18.75 sec

(D) 180 sec

 

5-The numerical control system which is applicable to a milling machine is called the

(A) Point to point system

(B) Continuous path system

(C) Straight cut system

(D) Contouring system

 

6-Which of the following tools are harder and more wear resistant than tungsten carbide but are weaker in section?

(A) Low carbon steel tools

(B) High carbon steel tools

(C) HSS tools

(D) Ceramic tools

 

7-The following non-conventional method of machining essentially requires electrolyte

(A) EDM

(B) ECM

(C) LBM

(D) EBM

 

8-In resistance welding, voltage used for heating is

(A) 1V

(B) 10V

(C) 100V

(D) 1000V

 

9-Which colour of flame represent highest temperature?

(A) Blue

(B) Bright red

(C) Dark yellow

(D) White

 

10-Kerosene is required while machining

(A) Aluminium

(B) Magnesium alloy

(C) Brass

(D) Low carbon steel

 

Answer Key

1-(D), 2-(D), 3-(C), 4-(A), 5-(C), 6-(D), 7-(B), 8-(A), 9-(A), 10-(A)