What is the slope of the overall gain Bode' plot between 1 and 10 rad/sec.

(1) -60 dB/decade (4) 0 dB/decade

(2) -40 dB/decade (5) +20 dB/decade

(3) -20 dB/decade

12. What is the gain margin?

(1) 10 dB ( 4) 35 dB

(2) 20 dB (5) 40 dB

(3) 2 5 dB

13. The Derivative controller responds only to changes in the error signal. It will not

produce a corrective signal if the system has a steady-state error.

(1) True (2). False

14. Derivative Controllers are never used alone. Proportional-Integral- Derivative

(PID) Controllers are the industry standard.

(1) True (2). False

15. The advantage of an integral controller in respect to an ON/OFF controller is that

an integral controller can drive the error to zero and maintain it at zero.

(1)True (2). False

16. In many applications the ON/OFF controller output is not acceptable. The output of

a proportional controller varies between fully ON and fully OFF depending on the

magnitude of the error signal. A proportional controller usually has a linear

response.

(1) True 2. False

17. What is the Laplace transform of f ( t ) = 10u( t )?

(1). F(s) = 20 (3). 2

20

s

F( s ) 

(2).

s

F s

10

( )  (4).

20

1





s

F( s )

18. What is the Laplace transform of f ( t ) = t F s e 2 ( ) 2   ?

(1). F(s)  3 (3).

s

F( s )

3

 2



(2).

s

F( s )

2

3

 (4).

2

2

( )





s

F s

7

1 9 . A process controlled with a proportional controller will reduce the output change, but cannot

eliminate it.

(1). True (2). False. (3). True or False depending on the condition.

20. Apply the final value theorem to the following equation.

(0.1 0.0328)

0.0984





s

PV

(1). 0.984 (2). 0.0984 (3). 0 (4). No correct answer