Explore topic-wise MCQs in ENGINEERING SERVICES EXAMINATION (ESE).

This section includes 50 Mcqs, each offering curated multiple-choice questions to sharpen your ENGINEERING SERVICES EXAMINATION (ESE) knowledge and support exam preparation. Choose a topic below to get started.

1.

The portion of the blast furnace below its widest cross-section is called
A. Hearth
B. Stack
C. Bosh
D. Throat
Answer» D. Throat
Discussion
2.

The transistor is made of
A. Silver
B. Gold
C. Copper
D. Germanium
Answer» E.
Discussion
3.

Brass is an alloy of
A. Copper and zinc
B. Copper and tin
C. Copper, tin and zinc
D. None of these
Answer» B. Copper and tin
Discussion
4.

An eutectoid steel consists of
A. Wholly pearlite
B. Wholly austenite
C. Pearlite and ferrite
D. Pearlite and cementite
Answer» B. Wholly austenite
Discussion
5.

Steel contains

 
A. 80% or more iron
B. 50% or more iron
C. Alloying elements like chromium, tungsten nickel and copper
D. Elements like phosphorus, sulphur and silicon in varying quantities
Answer» C. Alloying elements like chromium, tungsten nickel and copper
Discussion
6.

A small percentage of boron is added to steel in order to
A. Increase hardenability
B. Reduce machinability
C. Increase wear resistance
D. Increase endurance strength
Answer» B. Reduce machinability
Discussion
7.

Ball bearings are, usually, made from
A. Low carbon steel
B. High carbon steel
C. Medium carbon steel
D. Chrome steel
Answer» E.
Discussion
8.

Connecting rod is, usually, made from
A. Low carbon steel
B. High carbon steel
C. Medium carbon steel
D. High speed steel
Answer» D. High speed steel
Discussion
9.

Sulphur in steel
A. Acts as deoxidiser
B. Reduces the grain size
C. Decreases tensile strength and hardness
D. Lowers the toughness and transverse ductility
Answer» E.
Discussion
10.

The tensile strength of wrought iron is maximum
A. Along the lines of slag distribution
B. Perpendicular to lines of slag distribution
C. Uniform in all directions
D. None of the above
Answer» B. Perpendicular to lines of slag distribution
Discussion
11.

The purpose of heat treatment is to
A. Relieve the stresses set up in the material after hot or cold working
B. Modify the structure of the material
C. Change grain size
D. Any one of these
Answer» E.
Discussion
12.

Cemented carbide tools are not found to be suitable for cutting
A. Brass
B. Cast iron
C. Aluminium
D. Steel
Answer» E.
Discussion
13.

Large forgings, crank shafts, axles normally contain carbon up to
A. 0.05 to 0.20%
B. 0.20 to 0.45%
C. 0.45 to 0.55%
D. 0.55 to 1.0%
Answer» D. 0.55 to 1.0%
Discussion
14.

Which of the following has a fine gold colour and is used for imitation jewellery?
A. Silicon bronze
B. Aluminium bronze
C. Gun metal
D. Babbitt metal
Answer» C. Gun metal
Discussion
15.

White metal contains
A. 63 to 67% nickel and 30% copper
B. 88% copper and 10% tin and rest zinc
C. Alloy of tin, lead and cadmium
D. Silver and chromium
Answer» D. Silver and chromium
Discussion
16.

Shock resisting steels should have
A. Low wear resistance
B. Low hardness
C. Low tensile strength
D. Toughness
Answer» E.
Discussion
17.

Chromium when added to steel _________ the tensile strength.
A. Does not effect
B. Decreases
C. Increases
D. None of these
Answer» D. None of these
Discussion
18.

The compressive strength of cast iron is __________that of its tensile strength.
A. Equal to
B. Less than
C. More than
D. None of these
Answer» D. None of these
Discussion
19.

Hardness of lower bainite (tempered martensite) is about
A. RC 65
B. RC 48
C. RC 57
D. RC 80
Answer» D. RC 80
Discussion
20.

In compression, a prism of brittle material will break
A. By forming a bulge
B. By shearing along oblique plane
C. In direction perpendicular to application of load
D. By crushing into thousands of pieces
Answer» C. In direction perpendicular to application of load
Discussion
21.

Surveying tapes are made of a material having low coefficient of expansion and enough strength. The alloy used is
A. Silver metal
B. Duralumin
C. Hastelloy
D. Invar
Answer» E.
Discussion
22.

Which of the following alloys does not have copper as one of the constituents?
A. Delta metal
B. Monel metal
C. Constantan
D. Nichrome
Answer» E.
Discussion
23.

Wrought iron is
A. Hard
B. High in strength
C. Highly resistant to corrosion
D. Heat treated to change its properties
Answer» D. Heat treated to change its properties
Discussion
24.

Which of the following impurity in cast iron promotes graphite nodule formation and increases the fluidity of the molten metal?
A. Silicon
B. Sulphur
C. Manganese
D. Phosphorus
Answer» B. Sulphur
Discussion
25.

Pig iron is the name given to
A. Raw material for blast furnace
B. Product of blast furnace made by reduction of iron ore
C. Iron containing huge quantities of carbon
D. Iron in molten form in the ladles
Answer» C. Iron containing huge quantities of carbon
Discussion
26.

The temperature at which ferromagnetic alpha iron transforms to paramagnetic alpha iron is
A. 770°C
B. 910°C
C. 1050°C
D. Below recrystallization temperature
Answer» B. 910°C
Discussion
27.

The lower critical temperature
A. Decreases as the carbon content in steel increases
B. Increases as the carbon content in steel increases
C. Is same for all steels
D. Depends upon the rate of heating
Answer» D. Depends upon the rate of heating
Discussion
28.

When low carbon steel is heated up to lower critical temperature
A. There is no change in grain size
B. The average grain size is a minimum
C. The grain size increases very rapidly
D. The grain size first increases and then decreases very rapidly
Answer» B. The average grain size is a minimum
Discussion
29.

When low carbon steel is heated up to upper critical temperature
A. There is no change in grain size
B. The average grain size is a minimum
C. The grain size increases very rapidly
D. The grain size first increases and then decreases very rapidly
Answer» C. The grain size increases very rapidly
Discussion
30.

Which of the following display properties similar to that of steel?
A. Blackheart cast iron
B. Whiteheart cast iron
C. Both (A) and (B)
D. None of these
Answer» D. None of these
Discussion
31.

Slow plastic deformation of metals under a constant stress is known as
A. Creep
B. Fatigue
C. Endurance
D. Plastic deformation
Answer» B. Fatigue
Discussion
32.

The surface hardness of the following order is achieved by nitriding operation
A. 600 VPN
B. 1500 VPN
C. 1000 to 1100 VPN
D. 250 VPN
Answer» D. 250 VPN
Discussion
33.

A material is said to be allotropic, if it has
A. Fixed structure at all temperatures
B. Atoms distributed in random pattern
C. Different crystal structures at different temperatures
D. Any one of the above
Answer» D. Any one of the above
Discussion
34.

Body centered cubic space lattice is found in
A. Zinc, magnesium, cobalt, cadmium, antimony and bismuth
B. Gamma iron, aluminium, copper, lead, silver and nickel
C. Alpha iron, tungsten, chromium and molybdenum
D. None of the above
Answer» D. None of the above
Discussion
35.

Closed packed hexagonal space lattice is found in
A. Zinc, magnesium, cobalt, cadmium, antimony and bismuth
B. Gamma-iron, aluminium, copper, lead, silver and nickel
C. Alpha-iron, tungsten, chromium and molybdenum
D. None of the above
Answer» B. Gamma-iron, aluminium, copper, lead, silver and nickel
Discussion
36.

Tungsten in steel
A. Improves wear resistance, cutting ability and toughness
B. Refines grain size and produces less tendency to carburisation, improves corrosion and heat resistant properties
C. Improves cutting ability and reduces hardenability
D. Gives ductility, toughness, tensile strength and anti-corrosion properties
Answer» C. Improves cutting ability and reduces hardenability
Discussion
37.

Perminvar alloy having constant permeability is an alloy of
A. Nickel, copper and iron
B. Nickel, copper and zinc
C. Copper, nickel and antimony
D. Iron, zinc and bismuth
Answer» B. Nickel, copper and zinc
Discussion
38.

Foundry crucible is made of
A. Mild steel
B. German silver
C. Lead
D. Graphite
Answer» E.
Discussion
39.

Which is the false statement about wrought iron? It has
A. High resistance to rusting and corrosion
B. High ductility
C. Ability of hold protective coating
D. Uniform strength in all directions
Answer» E.
Discussion
40.

Gun metal contains
A. 70% copper and 30% zinc
B. 90% copper and 10% tin
C. 85 - 92% copper and rest tin with little lead and nickel
D. 70 - 78% copper and rest tin
Answer» D. 70 - 78% copper and rest tin
Discussion
41.

Admiralty gun metal contains
A. 63 to 67% nickel and 30% copper
B. 88% copper, 10% tin and rest zinc
C. Alloy of tin, lead and cadmium
D. Iron scrap and zinc
Answer» C. Alloy of tin, lead and cadmium
Discussion
42.

Duralumin contains
A. 3.5 to 4.5% copper, 0.4 to 0.7% magnesium, 0.4 to 0.7% manganese and rest aluminium
B. 3.5 to 4.5% copper, 1.2 to 1.7% manganese, 1.8 to 2.3% nickel, 0.6% each of silicon, magnesium and iron, and rest aluminium
C. 4 to 4.5% magnesium, 3 to 4% copper and rest aluminium
D. 5 to 6% tin, 2 to 3% copper and rest aluminium
Answer» B. 3.5 to 4.5% copper, 1.2 to 1.7% manganese, 1.8 to 2.3% nickel, 0.6% each of silicon, magnesium and iron, and rest aluminium
Discussion
43.

The temperature required for full annealing in hypereutectoid steel is
A. 30° C to 50° C above upper critical temperature
B. 30° C to 50° C below upper critical temperature
C. 30° C to 50° C above lower critical temperature
D. 30° C to 50° C below lower critical temperature
Answer» D. 30° C to 50° C below lower critical temperature
Discussion
44.

 

In a hardening process, the hypo-eutectoid steel is
A. Heated from 30°C to 50°C above the upper critical temperature and then cooled in still air
B. Heated from 30°C to 50°C above the upper critical temperature and then cooled suddenly in a suitable cooling medium
C. Heated from 30°C to 50°C above the upper critical temperature and then cooled slowly in the furnace
D. Heated below or closes to the lower critical temperature and then cooled slowly
Answer» C. Heated from 30°C to 50°C above the upper critical temperature and then cooled slowly in the furnace
Discussion
45.

In process annealing, the hypo eutectoid steel is
A. Heated from 30°C to 50°C above the upper critical temperature and then cooled in still air
B. Heated from 30°C to 50°C above the upper critical temperature and then cooled suddenly in a suitable cooling medium
C. Heated from 30°C to 50°C above the upper critical temperature and then cooled slowly in the furnace
D. Heated below or closes to the lower critical temperature and then cooled slowly
Answer» E.
Discussion
46.

The following element can't impart high strength at elevated temperature
A. Manganese
B. Magnesium
C. Nickel
D. Silicon
Answer» C. Nickel
Discussion
47.

The elastic stress strain behavior of rubber is
A. Linear
B. Nonlinear
C. Plastic
D. No fixed relationship
Answer» C. Plastic
Discussion
48.

The percentage of carbon in low carbon steel is
A. 0.05%
B. 0.15%
C. 0.3%
D. 0.5%
Answer» C. 0.3%
Discussion
49.

Manganese is added in low carbon steel to
A. Make the steel tougher and harder
B. Raise the yield point
C. Make the steel ductile and of good bending qualities
D. All of the above
Answer» D. All of the above
Discussion
50.

Bronze is an alloy of
A. Copper and zinc
B. Copper and tin
C. Copper, tin and zinc
D. None of these
Answer» C. Copper, tin and zinc
Discussion