Explore topic-wise MCQs in Mechanical Engineering.

This section includes 464 Mcqs, each offering curated multiple-choice questions to sharpen your Mechanical Engineering knowledge and support exam preparation. Choose a topic below to get started.

1.

In a “first angle” orthographic projection, the distance of a point lying on the object being projected, from HP will be visible in:

A. Front view
B. Top view
C. Front view and side view
D. All the three views
Answer» D. All the three views
2.

Isometric projection of a sphere is

A. Circle
B. Ellipse
C. Hyperbola
D. Parabola
Answer» B. Ellipse
3.

For complete description of a component, a machine drawing would require minimum how many orthographic projections?

A. 1
B. 2
C. 3
D. 4
Answer» D. 4
4.

As per (BIS) is: 10711, the Title Block

A. Bottom left
B. Top left
C. Bottom right
D. Top right
Answer» D. Top right
5.

A sectioning plane cuts a cone such that it is inclined to cone axis at an angle other than 90° and it cuts all its generators. The section so cut is

A. Rectangular Hyperbola
B. A Parabola
C. A Hyperbola
D. An ellipse
Answer» E.
6.

Circular shapes appear in this fashion when viewed at an angle other than 90 degrees

A. Circular
B. Elliptical
C. Lengthened
D. Angular
Answer» C. Lengthened
7.

If both the front and top views of a plane are straight lines, it may be

A. Perpendicular to both horizontal and vertical planes
B. Parallel to horizontal plane and perpendicular to vertical plane
C. Perpendicular to horizontal plane and parallel to vertical plane
D. Parallel to both horizontal and vertical planes
Answer» B. Parallel to horizontal plane and perpendicular to vertical plane
8.

Angles project true size only when the plane containing the angle and plane of projection are

A. Aligned
B. Adjacent
C. Perpendicular
D. Parallel
Answer» E.
9.

Hidden lines are drawn as

A. dashed narrow lines
B. dashed wide lines
C. long-dashed dotted wide line
D. long-dashed double dotted wide line
Answer» B. dashed wide lines
10.

If a line is parallel to V.P. and inclined to H.P., its top view will be

A. A point
B. A line of larger dimension
C. A line of smaller dimension
D. A line of same dimension
Answer» D. A line of same dimension
11.

If a line is parallel to H. P. and inclined to V. P., its front view will be

A. a line of smaller dimension
B. a line of larger dimension
C. a line of same dimension
D. a point
Answer» B. a line of larger dimension
12.

If a thread is wound around a cone, starting from a point on the base, and brought back to the same point, then the shortest possible length of the thread is equal to the

A. Diameter of the base of the cone
B. Slant height of the cone
C. Largest chord of the development sector
D. Length of the perpendicular from a corner of the development sector to the opposite edge
Answer» D. Length of the perpendicular from a corner of the development sector to the opposite edge
13.

Curve generated by a fixed point on the circumference of a circle which rolls without slipping along a fixed straight line.

A. Involute
B. Cycloid
C. Spiral
D. Helix
Answer» C. Spiral
14.

In an engineering drawing, it is written scale 1 cm = 100 m. Which ratio does it correspond to?

A. 1: 100
B. 1: 1000
C. 1: 10,000
D. 1: 1,00,000
Answer» D. 1: 1,00,000
15.

A drawing which shows the product with its components in their correct physical relationship is called

A. Part drawing
B. Layout drawing
C. Assembly drawing
D. Fabrication drawing
Answer» D. Fabrication drawing
16.

In Isometric projection, objects are drawn with __________

A. Reduced dimensions
B. Actual dimensions
C. Increased dimensions
D. Depends on the size of the drawing
Answer» E.
17.

For Engineering Drawings, match the Col. X and Col. Y Col. X (Type) Col. Y (Use) P. Large sized letters 1. Sub-Titles Q. Medium sized letters 2. Dimensions R. Small sized letters 3. Main Titles

A. P – 3, Q – 1, R - 2
B. P – 2, Q – 1, R - 3
C. P – 3, Q – 2, R - 1
D. P – 2, Q – 3, R - 1
Answer» B. P – 2, Q – 1, R - 3
18.

In Engineers scales, designation M5 indicates the scales ____________

A. 1 : 200
B. 1 : 10
C. 1 : 50
D. 1 : 400
Answer» B. 1 : 10
19.

If the development of the lateral surface of a cone is a semicircle, then

A. The slant height of the cone < diameter of the base of the cone
B. The slant height of the cone > diameter of the base of the cone
C. The slant height of the cone = diameter of the base of the cone
D. The slant height of the cone = radius of the base of the cone
Answer» E.
20.

A circle rolls without slipping on a flat surface. The path traced by a point, lying on circle’s periphery during its rolling is:

A. Involute
B. Hyperbola
C. Epicycloid
D. Cycloid
Answer» E.
21.

In Isometric view, two sides are inclined at __________ to the height of axis

A. 60°
B. 45°
C. 30°
D. 15°
Answer» B. 45°
22.

A third angle orthographic projection of an object is given below. What is this object?

A. Triangle
B. Trapezium
C. Cone
D. Frustrum of a cone
Answer» E.
23.

If a line is parallel to H.P. and inclined to V.P., its true length will be seen in

A. Front view
B. Top view
C. Side view
D. Both front and top views
Answer» C. Side view
24.

_____ is used to communicate information to industry

A. machine drawing
B. Design data
C. Installation drawing
D. Patent drawing
Answer» B. Design data
25.

Match Col. X (Line Type) with Col. Y (Application)Col. XCol. Y P. 1. Centre lines Q. 2. Ground lines R. 3. Hidden edges S. 4. Long break lines

A. P – 2, Q – 1, R – 4, S - 3
B. P – 3, Q – 1, R – 2, S - 4
C. P – 4, Q – 3, R – 1, S - 2
D. P – 2, Q – 1, R – 3, S - 4
Answer» C. P – 4, Q – 3, R – 1, S - 2
26.

Projection of an object shown by three views is known as

A. Oblique
B. Orthographic
C. Isometric
D. Perspective
Answer» C. Isometric
27.

A square lamina is perpendicular to both the reference planes. Its top and front views will be

A. The straight lines
B. The squares
C. A square and a straight line respectively
D. A straight line and a square respectively
Answer» B. The squares
28.

An isometric projection plane is one which is inclined to the three orthogonal planes at:

A. 30°
B. 60°
C. 15°
D. Equally
Answer» E.
29.

In a rectangular hyperbola, if a curve is traced out by a point moving in such a way that the product of its distances from two fixed lines at right angles to each other is a constant, then those fixed lines are called

A. asymptotes
B. intercepts
C. holes
D. limits
Answer» B. intercepts
30.

In the first-angle projection system, the right-hand side view of an object is drawn

A. right of the elevation
B. above the elevation
C. left of the elevation
D. below the elevation
Answer» D. below the elevation
31.

In multi-view projections, the XY line is known as

A. horizontal line
B. vertical line
C. traces
D. reference line
Answer» E.
32.

A cone resting on its base in horizontal plane (HP) is cut by a plane inclined to the axis and parallel to one of its generators, the sectional view will be

A. Ellipse
B. Parabola
C. Hyperbola
D. Circle
Answer» C. Hyperbola
33.

Dimensions in a series may be placed in any one of the following ways, except

A. progression dimensioning
B. proportional dimensioning
C. continuous dimensioning
D. chain dimensioning
Answer» C. continuous dimensioning
34.

As per IS962-1989, the minimum space between parallel lines including hatching is:

A. Not less than 0.7 mm
B. Not less than 10 mm
C. Less than 0.7 mm
D. Less than 10 mm
Answer» B. Not less than 10 mm
35.

If a circular plane is inclined at 60° with the H.P. and 30° with the V.P., its side view will be

A. a circle
B. a straight line
C. an ellipse
D. true shape
Answer» C. an ellipse
36.

First angle and third angle projection methods are used in drawing ______

A. Perspective projection
B. Oblique projection
C. Areal projection
D. Orthographic projection
Answer» E.
37.

In __________ opposite sides are equal and parallel, but angle are not right angles.

A. Rhombus
B. Trapezium
C. Rectangle
D. Trapezoid
Answer» B. Trapezium
38.

For profile controls, datum is

A. Allowed but not required
B. Not allowed
C. Required
D. None of these
Answer» B. Not allowed
39.

In the first-angle projection method, the relative positions of the observer, object and plane are

A. Plane is placed between observer and object
B. Observer is placed between object and plane
C. Object is placed between observer and plane
D. May be placed in any order
Answer» D. May be placed in any order
40.

For drawing engineering curves, which is correct option (e = eccentricity)

A. For Ellipse, e > 1
B. For Parabola, e < 1
C. For Hyperbola, e = 1
D. For Parabola, e = 1
Answer» E.
41.

If a thin rectangular plate of 60 mm × 30 mm is inclined at an angle of 60° to the Horizontal Plane, its top view may be:

A. Square of 30 mm size
B. Square of 60 mm size
C. Rectangle of 60 mm × 45 mm size
D. Rectangle of 45 mm × 30 mm size
Answer» B. Square of 60 mm size
42.

In Oblique projection, projectors from an object are parallel to each other and _________ to the plane of projection.

A. Inclined
B. Perpendicular
C. Parallel
D. Cross
Answer» B. Perpendicular
43.

If an object lies in the third quadrant, its position with respect to reference planes will be

A. In front of V.P, above H.P
B. Behind V.P., above H.P.
C. Behind V.P., below H.P.
D. In front of V.P., below H.P.
Answer» D. In front of V.P., below H.P.
44.

An Auto-CAD term that refers to a pre-drawn object which is stored in a drawing file and can be inserted into any other drawing file as needed is a __________.

A. lock
B. rick
C. alloon
D. one of the above
Answer» B. rick
45.

Referring to the fractional inches to decimal inches to millimeter conversion chart on page 55 what is the equivalent mm measurement of3/16 inch.

A. 0.906
B. 0.7625
C. 0.958
D. 4.6844
Answer» C. 0.958
46.

Most architectural firms and mechanical design companies utilize different categories of blocks. These sets of blocks are usually housed in _________.

A. lock vaults
B. lock libraries
C. lock books
D. lock references
Answer» C. lock books
47.

In some circumstances an entire drawing can be inserted into a different drawing as a block. When this is used the base point will default to _________.

A. , 0
B. 0, 10
C. 0, 20
D. 0, 30
Answer» B. 0, 10
48.

A circular plane with a 60 mm diameter is resting on a point of its circumference on the V.P. The surface of the plane is inclined at 45° to the V.P. and perpendicular to H.P. Its front view will be?

A. a straight line
B. an ellipse
C. a circle
D. a rectangle
Answer» C. a circle
49.

If a line is inclined to Vertical Plane and parallel to Horizontal Plane, then which of the following statements is always correct ?

A. True Length = Plan Length
B. True Length = Elevation Length
C. True Length < Plan Length
D. Vertical Trace of the line is above the XY plane
Answer» B. True Length = Elevation Length
50.

Isometric drawings fall into the category of

A. multi-view drawings
B. oblique drawings
C. axonometric drawings
D. perspective drawings
Answer» D. perspective drawings