Free Printable Control Systems Unit I and II

1.

Positive feedback improves ________ of the system

a)

Stability

b)

Gain

c)

Both

d)

None of these

2.

The capacitance, in force-current analogy, is analogous to

a)

momentum

b)

velocity

c)

displacement

d)

mass

3.

In closed loop control system, with positive value of feedback gain the overall gain of the system will

a)

decrease

b)

increase

c)

be unaffected

d)

None of these

4.

Block diagram reduction technique is a______ representation of systems

a)

Pictorial

b)

Graphical

c)

Tabular

d)

Sequential

5.

Electrical analogy uses________

a)

Newton's II law

b)

Kirchoff's Laws

c)

Faraday's Law

d)

None of these

6.

Among Signal Flow Graph and Block Diagram reduction technique, which is easier?

a)

Signal Flow Graph

b)

Block Diagram

c)

Both

d)

None of these

7.

Name the Symbol

(a)

8.

Signal Flow is applicable to _______ systems

a)

Non-Linear

b)

Linear

c)

Time Variant

d)

None of these

9.

Which system is accurate and reliable?

a)

Closed Loop

b)

Open Loop

c)

Both

d)

None of these

10.

Name the basic elements of Mechanical Rotational System.

(a)

11.

Response of a system is represented in (a) domain

12.

Find the poles and Zeros of the system

T\left(S\right)=\frac{\text{}S\left(S+3\right)}{S^2\left(S+4\right)\left(S+9\right)}

a)

Poles (0,0,-4,-9)

Zeros (0, -3)

b)

Poles (0,-4,-9)

Zeros ( -3)

c)

Poles (0,0,4,9)

Zeros (0, 3)

d)

Poles (0, 4,9)

Zeros ( 3)

13.

Find the order of the system

T\left(S\right)=\frac{\text{S}}{S^2\left(S^2+4S+1\right)}

a)

2

b)

1

c)

4

d)

5

14.

What is the condition for underdamped system?

a)

$\zeta>1$

b)

$0<\zeta<1$

c)

$\zeta=1$

d)

$\zeta<1$

15.

Time taken by the response to reach 50% of the final value is called

a)

Rise time

b)

Peak time

c)

Delay time

d)

Fall time

16.

Type 1 system has ________ error constant

a)

Positional

b)

Acceleration

c)

Velocity

d)

None

17.

Steady state error is the error when

a)

$t\rightarrow0$

b)

$0<t<\infty$

c)

$t>0$

d)

$t\rightarrow\infty$

18.

Which controller eliminates steady state error

a)

Proportional

b)

Proportional Integral

c)

Integral

d)

Proportional Derivative

19.

For type 0 system with unit ramp input, what is the value of steady state error

a)

0

b)

1

c)

$\infty$

d)

None of these

20.

What is the type number of the system?

G\left(S\right)H\left(S\right)=\frac{\left(S+2\right)}{\left(S+1\right)\left(S+4\right)\left(S+5\right)}

a)

1

b)

2

c)

3

d)

0

Control Systems Unit I and II

Total questions: 20

Worksheet time: 12mins

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