# Strength of Materials

• ## In determining stresses in frames by methods of sections, the frame is divided into two parts by an imaginary section drawn in such a way as not to cut more than_____.

• A. Two members with unknown forces of the frame
• B. Three members with unknown forces of the frame
• C. Four members with unknown forces of the frame
• D. Three members with known forces of the frame
Explanation:

No answer description available for this question.

• ## The coefficient of friction depends on_____.

• A. area of contact
• B. shape of surfaces
• C. strength of surfaces
• D. nature of surface
Explanation:

No answer description available for this question.

• ## If three forces acting in one plane upon a rigid body, keep it in equilibrium, then they must either_____.

• A. meet in a point
• B. be all parallel
• C. at least two of them must meet
• D. all the above are correct
Explanation:

No answer description available for this question.

• ## 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_____.

• A. 2.5 cm
• B. 3.0 cm
• C. 4.0 cm
• D. 5.0 cm
Explanation:

No answer description available for this question.

• ## If three forces acting in different planes can be represented by a triangle, these will be in_____.

• A. non-equilibrium
• B. partial equilibrium
• C. full equilibrium
• D. unpredictable
Explanation:

No answer description available for this question.

• ## In the lever of third order, load W, effort P and fulcrum F are oriented as follows_____.

• A. W between P and F
• B. F between W and P
• C. P between W and F
• D. W, P and F all on one side
Explanation:

No answer description available for this question.

• ## The magnitude of two forces, which when acting at right angle produce resultant force of VlOkg and when acting at 60° produce resultant of Vl3 kg. These forces are_____.

• A. 2 and V6
• B. 3 and 1 kg
• C. V5 and V5
• D. 2 and 5
Explanation:

No answer description available for this question.

• ## A number of forces acting at a point will be in equilibrium if_____.

• A. Their total sum is zero
• B. Two resolved parts in two directions at right angles are equal
• C. Sum of resolved parts in any two perpendicular directions are both zero
• D. All of them are inclined equally
Explanation:

No answer description available for this question.

• ## A semi-circular disc rests on a horizontal surface with its top flat surface horizontal and circular portion touching down. The coefficient of friction between semi-cricular disc and horizontal surface is i. This disc is to be pulled by a horizontal force applied at one edge and it always remains horizontal. When the disc is about to start moving, its top horizontal force will_____.

• A. remain horizontal
• B. slant up towards direction of pull
• C. slant down towards direction of pull
• D. unpredictable
Explanation:

No answer description available for this question.

• ## In ideal machines_____.

• A. mechanical advantage is greater than velocity ratio
• B. mechanical advantage is equal to velocity ratio
• C. mechanical advantage is less than velocity ratio
• D. mechanical advantage is unity