# FORCES MULTIPLE CHOICE QUESTIONS

## Forces comes from weight, wind, thermal, seismic, centrifugal.

### Q1. Tensile force is one which increases the dimension in its own direction and is

(a) Parallel to the area of cross section
(b) Normal to area of cross section
(c) Neither normal nor parallel to the cross section
(d) None
(Ans: b)

### Q2. Tensile force is normal to the cross section and its vector is

(a) Going into the area of cross section
(b) Coming out of the area of cross section
(c) Neither going in nor coming out of the cross section
(d) None
(Ans: b)

### Q3. Compressive force is one which decreases the dimension in its own direction and is

(a) Parallel to the area of cross section
(b) Normal to area of cross section
(c) Neither normal nor parallel to the cross section
(d) None
(Ans: b)

### Q4. Compressive force is normal to the cross section and its vector is

(a) Going into the area of cross section
(b) Coming out of the area of cross section
(c) Neither going in nor coming out of the cross section
(d) None
(Ans: a)

### Q5. A shear force is one which is

(a) Normal to the cross section
(b) Parallel to the surface
(c) Neither normal nor parallel to the surface
(d) None
(Ans: b)

(a) Compressive
(b) Tensile
(c) Shear
(d) None
(Ans: b)

(a) Compressive
(b) Tensile
(c) Shear
(d) None
(Ans: c)

### Q8. Identify the viscous force in a moving fluid will be

(a) Compressive
(b) Tensile
(c) Shear
(d) None
(Ans: c)

(a) Constant in magnitude and direction
(b) Variable magnitude and direction
(c) Constant in magnitude and variable in direction
(d) None
(Ans: a)

### Q10. A live load is one which is

(a) Constant in magnitude and direction
(b) Variable magnitude and direction
(c) Constant in magnitude and variable in direction
(d) None
(Ans: b)

### Q11. A thermal load is a tensile load when the body is prevented in its

(a) Expansion
(b) Contraction
(c) Expansion as well as contraction
(d) None
(Ans: b)

### Q12. A thermal load is a compressive load when the body is prevented in its

(a) Expansion
(b) Contraction
(c) Expansion as well as contraction
(d) None
(Ans: a)

(a) Tensile
(b) Compressive
(c) Shear
(d) None
(Ans: d)

### Q15. A snow load is one

(a) Constant in magnitude and direction
(b) Variable magnitude and direction
(c) Constant in magnitude and variable in direction
(d) None
(Ans: d)

### Q16. A snow load is one

(a) Variable in magnitude and constant in direction
(b) Variable in magnitude and direction
(c) Constant in magnitude and variable in direction
(d) None
(Ans: a)

(d) None
(Ans: d)

### Q18. A seismic load is a

(d) None
(Ans: b)

(a) 5 years
(b) 10 years
(c) Uncertain years
(d) None
(Ans: c)

### Q20. A seismic load is measured on the

(a) Linear scale
(b) Parabolic scale
(c) Logarithmic scale
(d) None
(Ans: d)

(a) < 7
(b) = 7
(c) > 7
(d) None
(Ans: c)

### Q23. An inertia force is

(a) Mass x velocity
(b) Mass x acceleration
(c) mrω2
(d) None
(Ans: b)

(a) Inertia force
(b) Gravitational force
(c) Pressure force
(d) None
(Ans: b)

(a) Centrifugal force
(b) Frictional force
(c) Thermal force
(d) None
(Ans: d)

(a) Live force
(b) Tensile force
(c) Seismic force
(d) None
(Ans: d)

### Q27. A wind force is a

(a) Constant in magnitude and constant in direction

(b) varying in magnitude as well as in direction

(c) Constant in magnitude and variable in direction

(d) None

(Ans: b)