39) A heavy string attached at two ends at same horizontal level and when central dip is very small approaches the following curve

catenary

parabola

hyperbola

elliptical

Answer is:

parabola

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40) A trolley wire weighs 1.2 kg per meter length. The ends of the wire are attached to two poles 20 meters apart. If the horizontal tension is 1500 kg find the dip in the middle of the span

2.5 cm

3.0 cm

4.0 cm

5.0 cm

Answer is:

4.0 cm

41) From a circular plate of diameter 6 cm is cut out a circle whose diameter is a radius of the plate. Find the e.g. of the remainder from the center of circular plate

0.5 cm

1.0 cm

1.5 cm

2.5 cm

Answer is:

0.5 cm

42) Pick up the incorrect statement from the following :

The C.G. of a circle is at its center

The C.G. of a triangle is at the intersection of its medians

The C.G. of a rectangle is at the inter-section of its diagonals

The C.G. of a semicircle is at a distance of r/2 from the center

Answer is:

The C.G. of a semicircle is at a distance of r/2 from the center

43) The center of percussion of a solid cylinder of radius r resting on a horizontal plane will be

r/2

2r/3

r/A

3r/2

Answer is:

3r/2

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39) A heavy string attached at two ends at same horizontal level and when central dip is very small approaches the following curve

parabola

Engineering Mechanics MCQ with Answers

Related Engineering Mechanics MCQ with Answers

40) A trolley wire weighs 1.2 kg per meter length. The ends of the wire are attached to two poles 20 meters apart. If the horizontal tension is 1500 kg find the dip in the middle of the span

4.0 cm

41) From a circular plate of diameter 6 cm is cut out a circle whose diameter is a radius of the plate. Find the e.g. of the remainder from the center of circular plate

0.5 cm

42) Pick up the incorrect statement from the following :

The C.G. of a semicircle is at a distance of r/2 from the center

43) The center of percussion of a solid cylinder of radius r resting on a horizontal plane will be

3r/2

Engineering Mechanics MCQ with Answers