Question

1. How could a non-periodic earthquake loading be expressed in order to make it easy to solve the problem regarding response ?

A) By expressing it as sum of a series of simple harmonic loading function

B) By expressing it as polynomial functions

C) by expressing it an irregular loading

D) By expressing it s complex functions

E) By expressing it as exponential functions

2. Which statement is true for the damped forced vibration?

A) The complementary response gets diminished eventually

B) The complementary solution represents steady state response

C) The particular response gets diminished eventually

D) The response of the system gets diminished eventually

E) The particular solution represents transient response

3. If u(t)=Asin(wt+Q) and A=(a^2+b^2)^0.5, then Which statement below could be correct ?

A) u(0) is not equal to zero

B) u(0) is equal to zero

C) a(0) is equal to zero

D) v(0) is equal to zero

4. If the displacement function is u(t) =asinwt+bcoswt, which statement below is correct? (a and b are not equal to zero)

A) u(t)=0 when t=0

B) The acceleration at t=0 is equal to 0

C) Phase angle is not equal to zero

D) The velocity at t=0 is equal to 0

Answer 1

1
Non periodic earthquake loading can be expressed as sum of series of simple harmonic loading function
Hence, option A is correct

2)complementary solution will approach zero as t increases
So it is known as transient solution
Hence,option A is correct diminished eventually

3) option A is correct as when t=0, velocity is AsinQ which is not equal to zero

4) c option is correct