NCVT ALL INDIA TRADE TEST AUG 2015 SEM 4 PART 1

1) Which anticorrosive metal is widely used for Surface coating on iron sheets for galvanizing ............ 

Copper

Brass

Zinc

Tin

Correct answer

Zinc

2) The brass used in making the joint in brazing for soldering material is .................. 

Flux

Soft Soldering

spelter

borax

Correct answer

spelter

3) Identify the coupling which allows positive transmission of power at larger angles. 

Slip type Coupling

Universal coupling

Plate coupling

Clamp Coiling

Correct answer

Universal coupling

4) Brass is an alloy of …………. 

copper and lead

copper and zinc

lead and tin

copper and tin

Correct answer

copper and zinc

5) Aluminum is extracted from the ore. 

aluminum oxide

Bauxite

magnetite

Pyrites

Correct answer

Bauxite

6) Electroplating is done on jobs to resist corrosion. Which pole of a DC supply is connected to work in electroplating process? 

Positive pole

Positive terminal pole

Negative pole

Negative terminal post

Correct answer

Negative pole

7) Generally, underground telephone and power cable are protected from corrosion by ........... 

copper

nickel

Lead

chromium

Correct answer

Lead

8) Name the part marked ‘X’ shown in figure 

Bonnet

Gland Nut

Stuffing box

Metal disk holders

Correct answer

Gland Nut

9) What is the advantage of cast iron pipes? 

Rarely available

Less corrosion

Costly

Crack easily

Correct answer

Less corrosion

10) Which pipe is used for interior work? 

Wrought Iron pipe

Lead pipe

PVC pipe

Steel pipe

Correct answer

Wrought Iron pipe

11) What pipe is generally used for carrying cold water? 

Copper pipe

Steel pipe

Lead pipe

PVC pipe

Correct answer

PVC pipe

12) What joint is used for temporary pipe Line 

Screwed joint

Collar joint

Expansion joint

Flange joint

Correct answer

Collar joint

13) Identify the part of a pipe wrench marked ‘X’ shown in the figure. 

Spring

Movable jaw

Adjusting Nut

Pivot

Correct answer

Adjusting Nut

14) Identify the reducer ‘T’ branch 

 

A

B

C

D

Correct answer

D

15) For case hardening, the first stage is carburizing it is meant ………… 

increasing the percentage of carbon of the core of the piece

decreasing the percentage of carbon on the surface

increasing the percentage of Carbon of the steel piece

increasing the percentage of carbon on the surface

Correct answer

increasing the percentage of carbon on the surface

16) The function of a washer is ………………… 

to absorb shock and vibrations

to fill the axial gap

to provide bearing area

to provide a cushioning effect

Correct answer

to provide bearing area

17) Washers are generally specified by. 

thickness

mean diameter

outer diameter

center hole diameter

Correct answer

center hole diameter

18) In a vee belt, the angle between the side is ......... 

10 degree

20 degree

30 degree

40 degree

Correct answer

40 degree

19) A fixture is a device used for … 

tightening tool

loosening the workpiece

guiding the tool

Holding the workpiece

Correct answer

Holding the workpiece

20) A jig is a device used for 

holding the workpiece

guidIng the tool

loosening the workpiece

holding the workpiece and guide the tool

Correct answer

holding the workpiece and guide the tool

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

Drill bush

V-block

Drill jig

Drill fixture

Correct answer

Drill jig

22) A typical locating device for the cylindrical job used in jigs and fixtures are ............ 

mandrels

drill jigs

angle plate

v - blocks

Correct answer

v - blocks

23) The fire triangle in fire hazards is identified as ......... 

fuel, oil, and waste

fuel, oxygen & heat

fuel, burning and solid

fuel, liquid, and vapor

Correct answer

fuel, oxygen & heat

24) To put off class ‘B’ fire the type of fire extinguisher used .............. 

foam type

carbon dioxide

dry powder

jet of water

Correct answer

carbon dioxide

25) Which type of gear used in heavy power transmission? 

Bevel gear

Hypoid gear

Herringbone gear

Helical gear

Correct answer

Herringbone gear