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. A Shaft is turned in one finish cut which one of the following parameters will directly influence the machining time?
A. Cutting depth
B. Setting angle
C. Diameter of work piece
D. Tool travel distance
2. Tool maker's buttons are used for
A. Aligning the workpiece for boring to a given datum
B. Setting the tool at correct centre height
C. Adjusting the slackness in the guideways of cross-slide
D. Holding the workpiece firmly
3. This type of thread is a thread on the inside of a member:
A. Basic thread
B. External thread
C. Internal thread
D. Major diameter thread
4. By which unit the roughness value is expressed for grinding
A. ?
B. ?n
C. ?bs
D. ?t
5. If the zero graduation of the thimble division of an outside micrometer is below the datum line, when the measuring faces of the micrometer are in contact, the error is
A. negative
B. positive
C. zero
D. none
6. Relief angle given behind the cutting lips is called
A. lip clearance angle
B. helix angle
C. rake angle
D. chisel edge angle
7. A fixed steady rest is used to
A. Support the tool rigidly to avoid chatter during operation.
B. Support long shafts that are being threaded for their full length.
C. Support workpieces during facing large diameter workpieces with short length.
D. Support long workpieces held in chuck, to perform operations at the verhanging end.
8. To enable a nut to fit properly on a bolt of square threads, the width of the internal square threading tool should be
A. slightly more than the half pitch
B. slightly less than the half pitch
C. equal to the half pitch
D. equal to the pitch
9. Hard solders melt at over
A. 150-350°C
B. 350-550°C
C. 550-750°C
D. 750-950°C
10. Eye hole of hammer is
A. Straight
B. Tapered at handle end
C. Tapered from both ends
D. Tapered from front end
11. Which milling machine is particularly adopted for milling internal or external profiles?
A. Pantograph milling machine
B. Universal milling machine
C. Planetary milling machine
D. Tracer controlled milling machine
12. Leveling bolts are used for :
A. Supporting the load for machine
B. Adjusting height of machine
C. Rigidity of machine
D. None of these
13. Soldering is initiated with
A. Floating
B. Tacking
C. Tinning
D. Fluxing
14. What type of threads are suitable for small precision componets and measuring gauges ?
A. British Association threads
B. Whitworth Screw threads
C. Acme threads
D. Square threads
15. The tool post of a planning machine is mounted on?
A. Apron
B. Cross rail
C. Clapper box
D. Saddle
16. Which among the following is the cause for incorrect pitch of thread during thread cutting with single point tool?
A. Incorrect selection of change gears
B. Lead screw worn out
C. Half nut worn out
D. Any one of the above
17. Which among the following is NOT the cause for loading of grinding wheel?
A. Dense structure
B. Feed too fine
C. Wheel speed more than recommended
D. Proper grain size and grade of wheel.
18. Solid milling cutters are manufactured from
A. Sintered carbide
B. H.S.S.
C. Ceramic
D. Stellite
19. Best conductor of heat and electricity is
A. Nickel
B. Copper
C. Chromium
D. Aluminium
20. 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
Dr K Chaudhry 5 Alpha Inmternational City, Fatehabad 125050 M: 9810570740, 9810571993facebook.com/doctorkc