Related Questions

Calculate the length of the tangent (in cm) which is drawn from a point at a distance of 13 cm from the centre and the largest chord of that circle is 10 cm.
A 10
B 12
C 15
D 16
The radius of circle A is r, and the radius of circle B is 3/4r. What is the ratio of the area of circle A to the area of circle B?
A 16 to 9
B 9 to 16
C 1 to 4
D 4 to 3
Radius of circle center 0 is 3 times the radius of circle center C. Angle ACB -A angle POQ. If the shaded are of circle C is 2 then what is the area of then shaded part of circleO?
A 36
B 9
C 12
D 18
When the addenda on pinion and wheel is such that the path of approach and path of recess are half of their maximum possible values, then the length of the path of contact is given by (where r = Pitch circle radius of pinion, R = Pitch circle radius of wheel and $$\varphi $$ = Pressure angle)
A $$\frac{{\left( {{{\text{r}}^2} + {{\text{R}}^2}} \right)\cos \varphi }}{2}$$
B $$\frac{{\left( {{{\text{r}}^2} + {{\text{R}}^2}} \right)\sin \varphi }}{2}$$
C $$\frac{{\left( {{\text{r}} + {\text{R}}} \right)\cos \varphi }}{2}$$
D $$\frac{{\left( {{\text{r}} + {\text{R}}} \right)\sin \varphi }}{2}$$
The distance from the centre of a cirle of radiud 5 cm o a chord of lengh 8 cm-
A 5 cm
B 4 cm
C 3 cm
D 2 cm
The centre of gravity of a quadrant of a circle lies along its central radius at a distance of
A 0.2 R
B 0.4 R
C 0.3 R
D 0.6 R
In long and short wall method of estimation, the length of long wall is the centre to centre distance between the walls and
A Breadth of the wall
B Half breadth of wall on each side
C One fourth breadth of wall on each side
D None of these
The ratio of the area of area of a circle to the radius of the radius of the circle is--
A π
B 2π
C π2
D none of these
ABCD is a square of side 10. AFC is an are of a circle with the center at D and radius 10. AGC is an are of a circle with the center at B and radius 10. Find the area of AFCG/
A 50 -100pie
B 25 -100 pie
C 100-25 pie
D 100-50pie
For an involute gear, the ratio of base circle radius and pitch circle radius is equal to
A sinɸ
B cosɸ
C secɸ
D cosecɸ

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