1. Intrinisic equation of catenary is given by____________________?
A. S = C tan q>
B. S = C cos cp
C. S = C sin cp
D. S = C cot
✅ The correct answer is option A.
2. A rigid body is in a stable equilibrium if the application of any force__________________?
A. can raise the CG of the body but can not lower it
B. tends to lower the CG of the body
C. neither raises nor lowers the CG of the body
D. none of above
✅ The correct answer is option A.
3. Cartesian form of the equation of catenary is_________________?
A. y = c cosh x/c
B. y = c sinh x/c
C. y = c tan x/c
D. y = c sin”1 x/c
✅ The correct answer is option A.
4. In a lifting machine a weight of 5 kN is lifted through 200 mm by an effort of 0.1 kN moving through 15 m. The mechanical advantage and velocity ratio of the machine are respectively_____________________?
A. 50 and 75
B. 75 and 50
C. 75 and 75
D. 50 and 50
✅ The correct answer is option A.
5. A rod AB carries three loads of 30 N, 70 N and 100 N at distances of 20 mm, 90 mm and 150 mm respectively from A. Neglecting the weight of the rod, the point at which the rod will balance is_______________?
A. 109.5 mm from A
B. 119.5 mm from A
C. 125.5 mm from A
D. 132.5 mm from A
✅ The correct answer is option A.
6. At the instantaneous center, the velocity of the moving lamina at any instant is_________________?
A. zero
B. maximum
C. minimum
D. varying
✅ The correct answer is option A.
7. A rope is wrapped twice around a rough pole with a coefficient of friction ‘A . It is subjected to a force Fj at one end and a gradually increasing force F2 is applied at the other end till the rope just starts slip-ping. At this instant the ratio of F2 to Fi is_____________________?
A. 1
B. e2*
C. e4*
D. e*72
✅ The correct answer is option B.
8. One Newton is equivalent to_________________?
A. 105 dyne
B. 106 dyne
C. 107 dyne
D. 981 dyne
✅ The correct answer is option A.
9. A circular disc rotates at n rpm. The angular velocity of a circular ring of same mass and radius as the disc and to have the same angular momentum is___________________?
A. n rpm
B. n/2 rpm
C. n/4 rpm
D. 2n rpm
✅ The correct answer is option B.
10. Coefficient of friction depends on__________________?
A. nature of surfaces only
B. area of contact only
C. both (A) and (B)
D. none of the above
✅ The correct answer is option A.