Applied Mechanics and Graphic Statics MCQs

Question 1

The potential energy of a particle falling through a straight shaft drilled through the earth (assumed homogenous and spherical) is proportional to (where r is the distance of’the particle from centre of the earth)

Accepted Answer

r2

Answer

log r

Answer

r

Answer

$$\frac{1}{{	ext{r}}}$$

Question 2

A stone is whirled in a vertical circle, the tension in the string, is maximum

Accepted Answer

When the stone is at the lowest position

Answer

When the string is horizontal

Answer

When the stone is at the highest position

Answer

At all the positions

Question 3

The graphical method of determining the forces in the members of a truss is based on

Accepted Answer

Method of joint

Answer

Method of section

Answer

Either method

Answer

None of the two methods

Question 4

The shape of a suspended cable under its own weight, is

Accepted Answer

Catenary

Answer

Parabolic

Answer

Circular

Answer

Elliptical

Question 5

The maximum value of the horizontal range for a projectile projected with a velocity of 98 m/sec is

Accepted Answer

980 m

Answer

98 m

Answer

490 m

Answer

1960 m

Question 6

A geo-stationary satellite is one which orbits the earth with a velocity of rotation of

Accepted Answer

Earth

Answer

Moon

Answer

Sun

Answer

Pole

Question 7

A particle moving with a simple harmonic motion, attains its maximum velocity when it passes

Accepted Answer

Through the mean position

Answer

The extreme point of the oscillation

Answer

Through a point at half amplitude

Answer

None of these

Question 8

A square hole is punched out of a circular lamina, the diagonal of the square being the radius of the circle. If ‘r’ is the radius of the circle, the C.G. of the remainder from the corner of the square on the circumference will be

Accepted Answer

$$\frac{{{	ext{r}}\left( {\pi - 0.25} ight)}}{{\pi - 0.5}}$$

Answer

$$\frac{{{	ext{r}}\left( {\pi + 0.25} ight)}}{{\pi - 0.5}}$$

Answer

$$\frac{{{	ext{r}}\left( {\pi - 0.5} ight)}}{{\pi + 0.25}}$$

Answer

$$\frac{{{	ext{r}}\left( {\pi + 0.25} ight)}}{{\pi + 0.5}}$$

Question 9

The practical units of work, is

Accepted Answer

Joule

Answer

Erg

Answer

Newton

Answer

Dyne