11 DECEMBER 2021 CURRENT AFFAIRS QUIZ

Given the Laplace transform of f(t) = F(s), the Laplace transform of (f(t)e-at) is equal to

e-as*F(s)

F(s)/(s+a)

F(s+a)

eas*F(s)

TRUE ANSWER : ?
YOUR ANSWER : ?

In the cauer-2 form of LC network---------is series element and --------is shunt element respectively?

L and C

C and C

L and L

C and L

TRUE ANSWER : ?
YOUR ANSWER : ?

Weighting function is in terms of -----------------

Laplace transform of the parabolic response

Laplace transform of the step response

Laplace transform of the ramp response

Laplace transform of the impulse response

TRUE ANSWER : ?
YOUR ANSWER : ?

what is the Laplace transform of a function δ(t-2)?

2s

e-2s

2

0

TRUE ANSWER : ?
YOUR ANSWER : ?

The transfer function of phase lead compensator is given by , where, T > 0, α < 0. What is the maximum phase shift provided by this compensator?

both 1 and 3

cos-1((1 - α)/(1 + α)

sin-1((1 - α)/(1 + α)

tan-1((1 - α)/(2√α)

TRUE ANSWER : ?
YOUR ANSWER : ?

In force-current analogy, electrical analogous quantity for displacement (x) is

inductance.

voltage.

flux.

capacitance.

TRUE ANSWER : ?
YOUR ANSWER : ?

The transfer function of a system is 10/(1 + S) when operated as a unity feedback system, the steady state error to a unit step input will be

1/11.

¾.

10.

Zero.

TRUE ANSWER : ?
YOUR ANSWER : ?

A property of phase lead compensation is that the

bandwidth of closed loop system is reduced.

overshoot is increased.

gain margin is reduced.

rise time of closed loop system is reduced.

TRUE ANSWER : ?
YOUR ANSWER : ?

The transfer function for tachometer E(S)/θ(S) is

KS2

KS

K/S

K

TRUE ANSWER : ?
YOUR ANSWER : ?

The impulse response of a system is c(t) = -te-t + 2 e-t (t>0). Its open loop transfer function is

(2s+1)/(s+1)²

(2s+2)/(s+1)²

(2s+2)/s²

(2s+1)/s²

TRUE ANSWER : ?
YOUR ANSWER : ?

↑