Explore topic-wise MCQs in Fitter.

This section includes 19 Mcqs, each offering curated multiple-choice questions to sharpen your Fitter knowledge and support exam preparation. Choose a topic below to get started.

1.

In D.C. welding, the straight polarity (electrode negative) results in:

A. Lower penetration
B. Lower deposition rate
C. Less heating of work piece
D. Smaller weld pool
Answer» C. Less heating of work piece
Discussion
2.

A process of joining similar metals by application of heat with or without application of pressure and addition of filter material is called ______

A. welding
B. nut and bolt joint
C. soldering
D. forming
Answer» B. nut and bolt joint
Discussion
3.

In brazing, the filler metal generally used is ______

A. Copper Zinc alloy
B. Copper Tin alloy
C. Aluminium foil
D. None of these
Answer» B. Copper Tin alloy
Discussion
4.

In arc welding, penetration is minimum for

A. DC – Electrode Positive
B. DC – Electrode Negative
C. AC
D. None of the above
Answer» B. DC – Electrode Negative
Discussion
5.

A welding transformer is used to convert the

A. D.C. main supply into an A.C. welding supply
B. A.C. main supply into a A.C. welding supply
C. A.C. main supply into a D.C. welding supply
D. D.C. main supply to D.C. welding supply
Answer» C. A.C. main supply into a D.C. welding supply
Discussion
6.

Consider the following work piece materials:i) Carbidesii) Glassiii) Copperiv) CeramicsWhich of the above materials are best suited for ultrasonic Machining?

A. (ii) Only
B. (ii) and (iii)
C. (i), (ii) and (iv)
D. (ii), (iii) and (iv)
Answer» D. (ii), (iii) and (iv)
Discussion
7.

In gas welding, maximum flame temperature occurs at

A. inner cone
B. outer cone
C. next of inner cone
D. tip of the flame
Answer» B. outer cone
Discussion
8.

Name the heat treatment process used to improve softness and ductility in mild steel

A. Hardening
B. Tempering
C. Annealing
D. Normalising
Answer» D. Normalising
Discussion
9.

In which type of welding is heavy, current (50,000 A) passed through the joint and welding is done under external pressure?

A. Arc welding
B. Spot welding
C. Gas welding
D. Forge welding
Answer» C. Gas welding
Discussion
10.

For TIG welding, commonly used gas is ________

A. Acetylene
B. Hydrogen
C. Argon
D. All of these
Answer» D. All of these
Discussion
11.

Fluxes are used in welding in order to protect the molten metal and surfaces to be joined from:

A. Oxidation
B. Distortion and warping
C. Unequal temperature distribution
D. Dirt
Answer» B. Distortion and warping
Discussion
12.

Oxyacetylene flame having more amount of C2H2 is called

A. Oxidizing flame
B. Neutral flame
C. Carburizing flame
D. Red flame
Answer» D. Red flame
Discussion
13.

Gas Metal Arc Welding refers to:

A. Electron Beam Welding
B. TIG Welding
C. Plasma Arc Welding
D. MIG Welding
Answer» E.
Discussion
14.

In arc welding operations the current value is decided by _____.

A. Thickness of plate
B. Length of welded portion
C. Voltage across the arc
D. Size of the electrode
Answer» E.
Discussion
15.

In thermit welding, thermit used is mixture of:

A. aluminum and iron oxide
B. aluminum and charcoal
C. iron oxide and charcoal
D. none of the above
Answer» B. aluminum and charcoal
Discussion
16.

In a brazing operation, which of the following is the commonly used flux?

A. Sulphuric acid
B. Hydrochloric acid
C. Diesel oil
D. Borax
Answer» E.
Discussion
17.

In MIG welding at high current, the metal is transferred into the form of which of the following?

A. A fine spray of metal
B. Molten drops
C. Weld pool
D. Molecules
Answer» B. Molten drops
Discussion
18.

Oxygen to acetylene ratio in case of carburising flame is _____.

A. 2 : 1
B. 0.9 : 1
C. 1 : 1
D. 1 : 1.2
Answer» C. 1 : 1
Discussion
19.

Carburizing flame is used to weld metals like _____.

A. Steel
B. Copper and brass
C. Aluminum, nickel, monel etc.
D. Carburized steel
Answer» D. Carburized steel
Discussion