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Chapter:

40+ Introduction Solved MCQs

in Fabrication Technology

These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Manufacturing Engineering .

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Chapter: Introduction
1.

Which of the following joint have high corrosion resistance?

A. Welding joint
B. Riveted joint
C. Bolted joint
D. None of the above
Answer» A. Welding joint
discuss
2.

The metals having good weldability, in descending order are

A. cast steel, iron, carbonsteel, castiron
B. carbon steel, iron, cast steel, castiron
C. iron, carbonsteel, cast steel, castiron
D. castiron, iron, carbon steel, cast steel
Answer» A. cast steel, iron, carbonsteel, castiron
discuss
3.

Which of the following is not included in weldability?

A. Ability of mechanical soundness
B. Serviceability of joint
C. Strain relieving brittleness
D. Metallurgical compatibility of metal
Answer» C. Strain relieving brittleness
discuss
4.

On which of the following factor, does weldability not depend?

A. Boiling point
B. Melting point
C. Thermal expansion
D. Thermal conductivity
Answer» A. Boiling point
discuss
5.

Which ofthe following is not away of correcting the metalwhich does not have good weldability properties?

A. Procedure of welding
B. Provision of fluxing material
C. Provision of filler material
D. Procedure of adding filler materials
Answer» D. Procedure of adding filler materials
discuss
6.

Which of the following is an example of plastic welding?

A. Gas welding
B. Arc welding
C. Forge welding
D. Thermit welding
Answer» C. Forge welding
discuss
7.

Which of the following is an example of fusion welding?

A. Arc welding
B. Forge welding
C. Resistance welding
D. Thermit welding with pressure
Answer» A. Arc welding
discuss
8.

Which ofthe followingwelding process is usedforweldingof sheetmetals in automobile and air craft industries?

A. Shield metal arc welding
B. Gas tungsten arc welding
C. Thermit welding
D. Resistance welding
Answer» D. Resistance welding
discuss
9.

In which of the following process, heat is created by blacksmith fire

A. Forge welding
B. Spot welding
C. Projection welding
D. Seam welding
Answer» A. Forge welding
discuss
10.

The voltage needed in resistance welding does not depend upon

A. Composition
B. Area
C. Thickness of weld
D. Length of weld
Answer» D. Length of weld
discuss
11.

In resistance welding, two electrodes are made of

A. Aluminium
B. Copper
C. Iron
D. Bronze
Answer» B. Copper
discuss
12.

Arc welding machine uses only D.C. supply.

A. True
B. False
C. all
D. none
Answer» B. False
discuss
13.

The negative pole of the electrode burns away faster than the positive pole.

A. True
B. False
C. all
D. none
Answer» B. False
discuss
14.

Which of the following is affected by weld contour?

A. Fatigue
B. Creep
C. Highpressureproperty
D. Lowpressureproperty
Answer» A. Fatigue
discuss
15.

Which of the following materials are not suited for cold welding?

A. Brass
B. Steel
C. Silver
D. Gold
Answer» B. Steel
discuss (1)
16.

Match the following
1. Seam welding 1.rods and pipes of uniform cross section
2. Butt welding 2. Welding satellite tips to tools
3. Percussion welding 3. ERWpipeswelding
Which of the following is true?

A. 1-3, 2-2, 3-1
B. 1-3, 2-1, 3-2
C. 1-2, 2-3, 3-1
D. 1-2, 2-1,3-3
Answer» B. 1-3, 2-1, 3-2
discuss
17.

What is the capacity of an automatic welding machine?

A. 100 to200A
B. 300 to 400A
C. 500 to700A
D. 800 to 3000A
Answer» D. 800 to 3000A
discuss
18.

What is the capacity of a light manual welding machine?

A. 100 to200A
B. 300 to 400A
C. 500 to700A
D. 60 amp to 500 amp
Answer» C. 500 to700A
discuss
19.

What is the efficiency of an A.C. welding transformer?

A. 0.6
B. 0.7
C. 0.8
D. 0.9
Answer» C. 0.8
discuss
20.

What is the amount of electric energy required per kg in dc welding operation?

A. 1-4 kWh
B. 3-7 kWh
C. 4-9 kWh
D. 6-10 kWh
Answer» D. 6-10 kWh
discuss
21.

During fabrication joining of two or more components are ___

A. Temporarily
B. Permanently
C. Temporarily or permanently both
D. None of the above
Answer» C. Temporarily or permanently both
discuss
22.

During fabrication which processes are included

A. Welding
B. Brazing
C. Soldering
D. All of the above
Answer» D. All of the above
discuss
23.

The Weldability of the metals in descending order

A. Iron, Steel, Cast iron, Low Alloy steel
B. Steel, Cast iron, Iron, Low Alloy steel
C. Iron, Cast iron, steel, low Alloy steel
D. Steel, Iron, Cast iron, Low Alloy steel
Answer» A. Iron, Steel, Cast iron, Low Alloy steel
discuss
24.

The Weldability of the metals in Ascending order

A. Low Alloy Steel, Stainless Steel, Cast Iron, Steel
B. Low Alloy Steel, Cast Iron, Steel, Stainless Steel
C. Stainless Steel, Low Alloy Steel, Cast Iron, Steel
D. Stainless Steel, Low Alloy Steel, Steel, Cast Iron
Answer» C. Stainless Steel, Low Alloy Steel, Cast Iron, Steel
discuss
25.

During the welding power require to produce arc to join the metals are

A. Low voltage low ampere
B. Low voltage high ampere
C. High voltage low ampere
D. High voltage high ampere
Answer» B. Low voltage high ampere
discuss
26.

Out of them which of the power source used in welding

A. Bilopar welding generator,
B. Multi operator D.C. welding sets
C. Both of them
D. None of them
Answer» C. Both of them
discuss
27.

Static type power sources include

A. Transformer, Motor-driven generator
B. Rectifier, Engine-driven Generator
C. Transformer, Rectifier
D. Motor-driven generator, Engine-driven generator
Answer» C. Transformer, Rectifier
discuss
28.

Rotating type power sources includes

A. Transformer, Motor-driven generator
B. Rectifier, Engine-driven Generator
C. Transformer, Rectifier
D. Motor-driven generator, Engine-driven generator
Answer» D. Motor-driven generator, Engine-driven generator
discuss
29.

Which type of plates cannot be welded in single pass

A. Thick plates
B. Thin Plates
C. all
D. none
Answer» A. Thick plates
discuss
30.

In power-sources Transformer can change polarity or not?

A. Yes
B. No
C. all
D. none
Answer» B. No
discuss
31.

In arc welding voltage is dependent of _____

A. Arc length
B. Arc gap
C. Both of them
D. None of them
Answer» C. Both of them
discuss
32.

The percentage of __ minutes duration during which the power source with necessary output can be used without causing any damage

A. 5
B. 10
C. 50
D. 60
Answer» B. 10
discuss
33.

In power sources Current used is

A. 50-1000 Amp
B. 500-1000 Amp
C. 100-500 Amp
D. 50-200 Amp
Answer» A. 50-1000 Amp
discuss
34.

Full form of OCV is

A. Output current voltage
B. Open command voltage
C. Open current voltage
D. Output command voltage
Answer» C. Open current voltage
discuss
35.

Which type of Power source is Solid State

A. Static type
B. Rotating type
C. Special type
D. None of them
Answer» C. Special type
discuss
36.

Which of power source is an engine-driven generator

A. Static type
B. Rotating type
C. Special type
D. None of them
Answer» B. Rotating type
discuss
37.

Which of power source is Rectifier?

A. Static type
B. Rotating type
C. Special type
D. None of them
Answer» A. Static type
discuss
38.

Full-Form of the MMAW is

A. Manual metal arc welding
B. Molted metal arc welding
C. Mix Metal arc welding
D. Metal arc welding
Answer» A. Manual metal arc welding
discuss
39.

The voltage needed in resistance welding does not depend upon

A. Composition
B. Area
C. Thickness
D. Length
Answer» D. Length
discuss
40.

Which type of process is also known as the fabrication process?

A. Casting
B. Forming
C. Joining
D. None of them
Answer» C. Joining
discuss
41.

Arc length in arc welding should be equal to ___

A. Half the diameter of the electrode rod
B. Rod diameter
C. Twice the rod diameter
D. None of the above
Answer» B. Rod diameter
discuss

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