A fresh set of 20 random questions is generated every time you open this page and every time you refresh it.For each of the following multiple choice questions, choose the most appropriate answer :
1. Carbon percentage in HSS tool is
A. 0.75 to 1.00%
B. 1.00 to 2.00%
C. 0.60 to 0.75%
D. 0.20 to 0.30%
2. While step turning, it is preferred to turn first
A. small diameter step
B. large diameter step
C. A or B
D. None of these
3. Hammers are classified by their weight and type of
A. Size
B. Length
C. Height
D. Head
4. In case of arc welding, one should protect his eyes by using
A. dark glass screen
B. sun goggles
C. mask
D. clear glasses
5. Distance through which a screw thread advances axially in one turn is called :
A. Pitch of thread
B. Lead of thread
C. depth of thread
D. Diameter of thread
6. Steel rule is a
A. marking instrument
B. precision instrument
C. checking instrument
D. direct reading measuring instrument
7. For best result of annealing, the heated steel piece is cooled
A. slowly in the furnace itself by switching off the heat supply
B. by removing the piece from the furnace and allowing it to cool in open air
C. by removing the piece from the furnace and placing it under a blast of air
D. by removing the piece from the furnace and dipping it in a tank containing water
8. Alloys "Duralumin" and "Hindalium" contain 95% of
A. Copper
B. Zinc
C. Lead
D. Aluminium
9. Which one of the following instruments is used to check the concentricity of the outside diameter?
A. Vernier caliper
B. Outside micrometer
C. Dial test indicator
D. Dial caliper
10. What is used for removing a broken tap ?
A. Tap disposer
B. Tap wrench
C. Tap extractor
D. Tap nut
11. Main product of puddling furnace is :
A. Cast iron
B. Wrought iron
C. Cold rolled steel
D. Hot rolled steel
12. External surface of the part made of mild steel can be hardened by
A. Tempering
B. Normalising
C. Case hardening
D. Hardening
13. Which of the following tasks is performed by a Bench fitter?
A. Measuring
B. Maintenance
C. Filing
D. All these
14. If reamer is found to be cutting while rotating in clockwise direction when viewed against the entering end at right angle to it is known as
A. Left handed reamer
B. Central reamer
C. Right handed reamer
D. None of the mentioned
15. For plain turning a 60 mm diameter workpiece using HSS tool with recommended cutting speed of 30 metre / min., the rpm should be
A. 80 rpm
B. 159 rpm
C. 192 rpm
D. 318 rpm
16. For general purpose, a bench vise is fixed at a height of :
A. 80 cm
B. 90 cm
C. 106 cm
D. 125 cm
17. Nut is to be made for a screw of M10x1.5. What should be the size of drilled hole?
A. 8.5 mm
B. 9.0 mm
C. 9.5 mm
D. 10.0 mm
18. In which one of the following materials no cutting oil is used when drilling ?
A. Tool steel
B. Grey cast iron
C. Copper
D. Aluminium
19. What is the advantage of tailstock spindle having left-handed threads?
A. Avoid advancement of barrel when rotated clockwise
B. Ensure that the barrel advances with clockwise movement of hand wheel
C. Reduce the tendency for excessive movement of the barrel
D. Avoid jamming of spindle and hand wheel
20. Which one of the following frictions occurs in an un-lubricated journal bearing ?
A. Sliding friction
B. Rolling friction
C. Fluid friction
D. Dry friction
Public Hospital 554/7 New Anaj Mandi, Fatehabad 125050 M: 9810570740, 9810571993
Tel: 01667221011, 9810570740, 9810571993 facebook.com/doctorkc