21. Which of the following is a vector quantity A. Energy B. Mass C. Momentum D. Angle Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
22. Which of the following is not a vector quantity A. Weight B. Velocity C. Acceleration D. Force Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
23. Effect of a force on a body depends upon A. Magnitude B. Direction C. Position or line of action D. All of the above Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
24. Kinetic friction is the A. Tangent of angle between normal reaction and the resultant of normal reaction and the limiting friction B. Ratio of limiting friction and normal reaction C. The friction force acting when the body is just about to move D. The friction force acting when the body is in motion Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
25. According to principle of transmissibility of forces, the effect of a force upon a body is A. Maximum when it acts at the center of gravity of a body B. Different at different points in its line of action C. The same at every point in its line of action D. Minimum when it acts at the C.G. of the body Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
26. The centre of gravity (C.G.) of a solid hemisphere lies on the central radius A. At distance $$\frac{{3{\text{r}}}}{2}$$ from the plane base B. At distance $$\frac{{3{\text{r}}}}{4}$$ from the plane base C. At distance $$\frac{{3{\text{r}}}}{5}$$ from the plane base D. At distance $$\frac{{3{\text{r}}}}{8}$$ from the plane base Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
27. D'Alembert's principle is used for A. Reducing the problem of kinetics to equivalent statics problem B. Determining stresses in the truss C. Stability of floating bodies D. Designing safe structures Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
28. Tangent of angle of friction is equal to A. Kinetic friction B. Limiting friction C. Angle of repose D. Coefficient of friction Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
29. A force is completely defined when we specify A. Magnitude B. Direction C. Point of application D. All of the above Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
30. A heavy string attached at two ends at same horizontal level and when central dip is very small approaches the following curve A. Catenary B. Parabola C. Hyperbola D. Elliptical Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board