Earthquake Engineering (3160621) MCQs

MCQs of Fundamentals of Earthquake Vibrations of buildings

Showing 41 to 50 out of 53 Questions
41.

Which is the equation of free damped vibration of SDOF system?

(a)

m𝒙 + c𝒙 + kx = 0

(b)

m𝒙 + kx = 0

(c)

m𝒙 + c𝒙 = 0

(d)

m𝒙 + c𝒙 + kx = F(t)

Answer:

Option (a)

42.

Which is the equation of Force damped vibration of SDOF system?

(a)

m𝑥 + c𝑥 + kx = 0

(b)

m𝑥 + kx = F(t)

(c)

m𝑥 + c𝑥 = F(t)

(d)

m𝑥 + c𝑥 + kx = F(t)

Answer:

Option (d)

43.

Which is the equation of Force undamped vibration of SDOF system?

(a)

m𝒙 + kx = F(t)

(b)

m𝒙 + kx = 0

(c)

m𝒙 + cx = F(t)

(d)

m𝒙 + kx + cx = F(t)

Answer:

Option (a)

44.

A mass of 1 kg is suspended by spring having stiffness of 600 N/m. Which is the equation of motion for the given system.

(a)

1 𝑥 + 600 = 0

(b)

𝑥 + 600x = 1

(c)

𝒙 + 600x = 0

(d)

None of the above

Answer:

Option (c)

45.

A vertical cable 3m long has cross sectional area of 4cm2 supports some weight. What will be the stiffness of the cable?

(a)

7000 kg/cm

(b)

7200 kg/cm

(c)

7500 kg/cm

(d)

None of the above.

Answer:

Option (a)

46.

A cantilever beam AB of length L is attached to a spring k and mass M at free end. What will be the stiffness of cantilever beam?

(a)

3EIL2

(b)

3EIL3

(c)

4EIL

(d)

12EIL3

Answer:

Option (b)

47.

A simply supported rectangular beam has weight at center of beam. What will be the stiffness of the beam?

(a)

48EIL3

(b)

3EIL3

(c)

12EIL3

(d)

None of the above.

Answer:

Option (a)

48.

A vibrating system consist of a mass 5 kg spring stiffness 120 N/m and a damper. What will be damping co- efficient of a system?

(a)

45

(b)

49

(c)

55

(d)

60

Answer:

Option (b)

49.

Which is the equation of spring force?

(a)

mx

(b)

kx

(c)

cx

(d)

None of the above.

Answer:

Option (b)

50.

Which is the equation of inertia force?

(a)

mx

(b)

kx

(c)

cx

(d)

None of the above.

Answer:

Option (a)

Showing 41 to 50 out of 53 Questions