NCVT ALL INDIA TRADE TEST PAPER FEB 2016 SEM 4 PART 1

1) The accurate spacing of teeth in a gear blank requires the use of 

dividing head

an index plate

universal table

a differential mechanism

Correct answer

dividing head

2) Helical gears can be cut on which type of milling machine? 

Plain

Horizontal

Universal

Drum type

Correct answer

Universal

3) The carburizing is done on ................ 

medium carbon steel

high-speed steel

high carbon steel

low carbon steel

Correct answer

low carbon steel

4) The standard pipe fittings are provided with threads conforming with ................... 

BA

BSW

BSP

Metric

Correct answer

BSP

5) Which clutch can be engaged progressively when one or both the elements are rotating? 

Centrifugal clutch

Cone clutch

Dog clutch

Single plate clutch

Correct answer

Cone clutch

6) The included angle of a pipe thread is ................. 

45°

47°

60°

55°

Correct answer

55°

7) The damaged external threads are rectified by ................. 

die nut

circular die

half die

adjustable screw plate die

Correct answer

die nut

8) Where a large speed reduction is desired, which type of gear is used? 

Herringbone gear

Helical bone gear

Hypoid gear

Worm and worm wheel

Correct answer

Worm and worm wheel

9) Which type of gear converts rotary motion to linear motion? 

Hypoid gear

Internal gear

Rack and pinion

Worm and worm wheel

Correct answer

Rack and pinion

10) In the pipe assembly, the hemp packing is used to .......... 

avoid leakage

get tight fitting

easy engagement

fill the gap between threads

Correct answer

avoid leakage

11) Which of the following can hold the work, locate the work and guide the tool at the desired position? 

Drill jig

Drill bush

Drill fixture

V - block

Correct answer

Drill jig

12) The application of pressure pads in fixtures is to .............. 

increase the weight

increase the shocks

increase the vibration

absorb shocks

Correct answer

absorb shocks

13) Identify the type of fitting shown in the figure. 

Nipple

Union

Plug 

Reducer

Correct answer

Union

14) Gears having their teeth element parallel to the rotating shafts are known as ................. 

worm gear

spur gear

helical gear

bevel gear

Correct answer

spur gear

15) The fuels like wood, paper, cloth, solid materials etc., come under which class of fire? 

Class C fire

Class D fire

Class B fire

Class A fire

Correct answer

Class A fire

16) Which metal is used for coating in galvanizing? 

Zinc

Aluminum

Lead

Brass

Correct answer

Zinc

17) Water flows from tap even when firmly closed, what is the reason? 

Spindle thread is worn out

Retainer nut loose

Spindle bent

Defective washer

Correct answer

Defective washer

18) Aluminum is widely used in the aircraft industry because it is ........................ 

low tensile strength

light in weight

soft and ductile

corrosion resistant

Correct answer

light in weight

19) Which type of gas flame is most suitable for brazing? 

Oxy-hydrogen gas flame

Oxy-LP gas flame

Oxy-coal gas flame

Oxy-acetylene gas flame

Correct answer

Oxy-acetylene gas flame

20) Bronze is an alloy of .............. 

zinc and tin

copper and tin

copper and zinc

copper, zinc, and tin

Correct answer

copper and tin

21) The radial distance between the pitch circle and the root circle is called ................. 

whole depth of the teeth

working depth of the teeth

addendum

dedendum

Correct answer

dedendum

22) Which one of the following is liquid lubricant? 

Molybdenum disulfide

Synthetic oil

Grease

Wax

Correct answer

Synthetic oil

23) Name the lubricator shown in the figure. 

Ring oiling lubricator

Force feed lubricator

Wick feed lubricator

Sight feed lubricator

Correct answer

Wick feed lubricator

24) Drilling jigs are used for ............ 

sharpening drill to correct angle

drilling, reaming tapping and other allied operations

drilling operation only

clamping the job while drilling

Correct answer

drilling, reaming tapping and other allied operations

25)  the footprint wrench shown in the figure.