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. Which one of the following sheets is used for making highly corrosive acid tanks .
A. Black iron sheets
B. Galvanised iron sheets
C. Stainless steel sheets
D. Lead sheets
2. The brazing temperature is
A. Below 450°C
B. Above 450°C
C. Above 1000°C
D. Above 1500°C
3. Which one of the following quenching media is used for hardening H.S.S. tool ?
A. Water
B. Brine solution
C. Oil
D. Soda water
4. Height of the snaphead rivet is standardized to :
A. 0.5 x diameter of rivet
B. 0.7 x diameter of rivet
C. 0.9 x diameter of rivet
D. 1.1 x diameter of rivet
5. The taper provided in the nose of the tailstock barrel is
A. Morse taper
B. Jarno taper
C. Brown and Sharpe taper
D. Metric taper
6. Desirable hardness in a file is generally
A. 30 HRC
B. 45 HRC
C. 60 HRC
D. 80 HRC
7. There is problem of alignment in deep groove ball bearings.
A. Yes
B. No, it is self-aligning
C. It aligns itself only in some particular cases
D. Cannot be determined
8. Metric outside micrometer has a threaded spindle with a pitch of
A. 0.5 mm
B. 0.25 mm
C. 1.00 mm
D. 1.50 mm
9. Which among the following joints is suitable for roofing work ?
A. Lap joint
B. Butt joint
C. Hinged joint
D. Double grooved seam joint
10. Cast iron is used for manufacturing machine beds because
A. it can resist more compressive stress
B. it is heavy in weight
C. it is a cheaper metal
D. it is a brittle metal
11. The spot welding machine works by a combination of
A. Sheet metal and electrodes
B. Heat and spark
C. Pressure and temperature
D. Heat, pressure, and time
12. Various alloying elements are added to produce different alloy steels, which one of the following combination of alloying elements is using for HSS?
A. Chromium, nickel and molybdenum
B. Nickel, molybdenum and silicon
C. Chromium, vanadium and maganese
D. Chromium, vanadium and tungsten
13. In an acetylene cylinder, the acetylene is dissolved in
A. Water
B. Carbon Dioxide
C. Acetone
D. Mercury
14. Which taper is used on spindle nose of the lathe head stock?
A. Jerno taper
B. Brown and sharp taper
C. Pin taper
D. Morse taper
15. Drill sleeves or sockets are available with morse taper and their number range MT-1 to MT-6. Which one of the following drill sizes refers to MT-4 ?
A. Drills above 14 mm upto 23 mm
B. Drills above 23 mm upto 31.75 mm
C. Drills above 31.75 mm upto 50.50 mm
D. Drills above 50.50 mm upto 76 mm
16. Commonly used standard length of hacksaw blade is
A. 100 mm
B. 150 mm
C. 200 mm
D. 250 mm
17. Thread measurement with inserts fitted in the anvil and spindle of screw tread micrometer are selected on the basis of one the following elements of a thread being measured?
A. Major diameter
B. Minor diameter
C. Effective diameter
D. Pitch
18. Which one of the following metals has less carbon content?
A. Plain carbon steel
B. Wrought iron
C. Pig iron
D. Cast iron
19. The tooth thickness of rack is measured by?
A. Universal vernier caliper
B. Gear tooth vernier caliper
C. Flange micrometer
D. Gear tester
20. Measured size of the dimension of a component is called
A. Basic size
B. Nominal size
C. Allowed size
D. Actual size
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