This set of Engineering Drawing Multiple Choice Questions & Answers (MCQs) focuses on “Types of Nuts”.

1. Screwed joints are ______________

a) Temporary joints

b) Permanent joints

c) Neither permanent nor temporary joint

d) Temporary and permanent joints

View Answer

Explanation: Joints are either temporary or permanent. Screwed joints are temporary joints as they are easily separated by screwing off. Pipe joints, pin joints, cotter joints, and screwed joints are some of the temporary joints.

2. Angle turned by the spanner to get the alternative holds in a hexagonal nut is ______

a) 180°

b) 60°

c) 90°

d) 40°

View Answer

Explanation: To get the Next to hold the spanner needs to be turned 360°/(no. of side), hence for hexagonal it is 360°/6 = 60°. It is more convenient than any other type of nuts in use.

3. Angle turned by the spanner to get the alternative holds in a square nut is ______

a) 180°

b) 60°

c) 90°

d) 40°

View Answer

Explanation: To get the Next hold the spanner needs to be turned 360°/(no. of side), hence for square it is 360°/4 = 90°. Square is convenient to get hold but the turning is little complex hence hexagonal nuts are highly preferred.

4. The angle of chamfering for the hexagonal nut with the base is ________

a) 30° to 45°

b) 50° to 65°

c) 10° to 25°

d) 60° to 75°

View Answer

Explanation: The upper corners of the nut are basically chamfered to avoid sharp edges, generally in a conical shape. The angle of the chamfer is 30° to 45°.

5. As per the approximate standard dimensions the relation between the thickness of the nut T and the nominal diameter of the bolt D for a hexagonal nut.

a) D = 0.5T

b) T = 2D

c) T = D

d) D = 2T

View Answer

Explanation: Nuts and bolts have standard dimensions and proportions published by B.I.S. Approximate standard dimensions are adopted mostly for elementary works. As published by B.I.S, the relation as per approximate standard dimensions between the thickness of the nut T and the nominal diameter of the bolt D is T = D for hexagonal nut.

6. As per the approximate standard dimensions the relation between the width across flats W and the nominal diameter of the bolt D, in mm for a hexagonal nut.

a) D = 0.5W + 3

b) W = 2D + 3

c) W = 1.4D

d) W = 1.5D + 3

View Answer

Explanation: Nuts and bolts have standard dimensions and proportions published by B.I.S. Approximate standard dimensions are adopted mostly for elementary works. As published by B.I.S, the relation as per approximate standard dimensions between the width across flats W and the nominal diameter of the bolt D is W = 1.5D + 3mm for hexagonal nut.

7. As per the approximate standard dimensions the relation between the radius of chamfer arc, R and the nominal diameter of the bolt D for a hexagonal nut.

a) D = 0.5R

b) R = 2D

c) R = 1.4D

d) D = 2R

View Answer

Explanation: Nuts and bolts have standard dimensions and proportions published by B.I.S. Approximate standard dimensions are adopted mostly for elementary works. As published by B.I.S, the relation as per approximate standard dimensions between the radius of chamfer arc, R and the nominal diameter of the bolt D is R = 1.4D.

8. As per the rough rule dimensions the relation between the thickness of the nut T and the nominal diameter of the bolt D for a hexagonal nut.

a) D = 0.5T

b) T = 2D

c) T = D

d) D = 2T

View Answer

Explanation: Nuts and bolts have standard dimensions and proportions published by B.I.S. Rough rule dimensions are adopted mostly for one view drawings of nuts. As published by B.I.S, the relation as per rough dimensions between the thickness of the nut T and the nominal diameter of the bolt D is T = D for hexagonal nut.

9. As per the rough rule dimensions the relation between the radius of chamfer arc, R and the nominal diameter of the bolt D for a hexagonal nut.

a) D = 0.5R

b) R = 2D

c) R = 1.4D

d) D = 2R

View Answer

Explanation: Nuts and bolts have standard dimensions and proportions published by B.I.S. Rough rule dimensions are adopted mostly for one view drawings of nuts. As published by B.I.S. the relation as per rough rule dimensions between the radius of chamfer arc, R and the nominal diameter of the bolt D is R = 1.4D for hexagonal nut.

10. As per the rough rule dimensions what will be the distance across the opposite corners diagonally for a nut if the nominal diameter of the bolt D for a hexagonal nut.

a) D

b) 0.5D

c) 1.5D

d) 2D

View Answer

Explanation: Nuts and bolts have standard dimensions and proportions published by B.I.S. Rough rule dimensions are adopted mostly for one view drawings of nuts. As per rough rule dimensions the distance across the opposite corners diagonally for a nut is 2D if the nominal diameter of the bolt D for hexagonal nut.

11. As per the approximate standard dimensions the relation between the thickness of the nut T and the nominal diameter of the bolt D for a square nut.

a) D = 0.5T

b) T = 2D

c) T = D

d) D = 2T

View Answer

Explanation: Nuts and bolts have standard dimensions and proportions published by B.I.S. Approximate standard dimensions are adopted mostly for elementary works. As published by B.I.S, the relation as per approximate standard dimensions between the thickness of the nut T and the nominal diameter of the bolt D is T = D for square nut.

12. A hexagonal nut with a flat circular disc attached to it is called ______

a) Dome nut

b) Cap nut

c) Flanged nut

d) Capstan nut

View Answer

Explanation: Different type of nuts are used for various purposes. The flanged nut is a hexagonal nut with a washer attached to it which flat circular disc. They are widely used in automobiles.

13. To prevent leakage through the thread and protect the ends of the bolt from corrosion ________ is used.

a) Ring nut

b) Cap nut

c) Flanged nut

d) Capstan nut

View Answer

Explanation: Different type of nuts are used for various purposes. Cap nut is a hexagonal nut with a cap at the top to prevent leakage through the thread and protect the ends of the bolt from corrosion.

14. Nut in a cylindrical shape with holes drilled in the curved shape is called _________

a) Ring nut

b) Cap nut

c) Flanged nut

d) Capstan nut

View Answer

Explanation: Different type of nuts are used for various purposes. Capstan nut is a cylindrical shaped nut with holes drilled in the curved surface. The holes are also drilled in the upper face sometimes when pin-spanners are used for turning.

15. Wing nuts are easily operated with the fingers.

a) True

b) False

View Answer

Explanation: Wing nuts are designed to use where frequent adjustments are required. They can be easily operated by the thumb and the fingers. They are used in hacksaw.

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