WorksheetsBasics of Control Systems
Total questions: 15
Worksheet time: 8mins
Block Diagram can be used to represent:
Only linear systems
Only non-linear systems
only time-variant systems
time-invariant as well as time-variant
Signal flow graphs can be used to represent:
Only linear systems
Only non-linear systems
only time-variant systems
time-invariant as well as time-variant
Which system is also known as automatic control system?
open loop control system
Closed loop control system
both 1 & 2
None of these
In open loop system____
the control action depends on the size of the system
the control action depends on system variables
the control action depends on the input signal
the control action is independent of the output
A control system in which the control action is somehow dependent on the output is known as
Open loop system
Semiclosed loop system
Closed loop system
None of the above
With feedback _______ increases
system stability
sensitivity
gain
effects of disturbing signals
Reference input minus the primary feedback is called ________ signal
Manipulated variable
Error signal
Zero signal
Primary feedback
The roots of the denominator polynomial of the transfer function are called:
ZEROS
POLES
SINGULARS
PLURALS
A third-order system will have:
3 poles
3 zeros
1 Zero and 2 poles
1 pole and 2 zeros
Transfer function is the ratio of
Laplace transform of output to input
Laplace transform of output to Laplace transform of input.
Laplace transform of output to Laplace transform of input assuming all initial condition zero.
Output to Laplace transform of input.
In a signal flow graph method, how is an overall transfer function of a system obtained?
Poisson's equation
Mason's equation
Block diagram reduction rule
Lagrange's equation
For the system in the given figure, the transfer function C(s)/R(s) is:
G1 + G2 + G3
G1 G2 + G3
G1 G2 G3
(G1 + G2) G3
A node in SFG which has only outgoing branches is called a:
Source Node
Sink Node
Intermediate node
general node
A node in SFG which has only incoming branches is called a:
Source Node
Sink Node
Intermediate node
general node
A transfer function is defined only for:
Linear time-varying system
Linear time-invariant system
linear and Non-linear systems
All of these
