Worksheetscontrol systems
Total questions: 32
Worksheet time: 16mins
Computer technology are used to control manufacturing devices like the laser cutting machines.
TRUE
FALSE
Computers are useful to control things because they are
more accurate
respond to changes faster
both the above options
To increase damping of pair of complex roots compensator used is
Phase lag
Phase lead
Phase lag lead
One with 60° lead circuit
Closed loop poles are
Zeros of 1+G(S). H(s)
Zeros of G(s) H(s)
Poles of G(s) H(s)
Poles of 1 + G(s) H(s)
Feed back control system are basically
Low pass filter
High pass filter
Band pass filter
Band stop filter
With feedback _______ increases
system stability
sensitivity
gain
effects of disturbing signals
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
Which system is also known as automatic control system?
open loop control system
Closed loop control system
both 1 & 2
None of these
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
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.
It's the fundamental element in the control system
Actuator
Controller
Error detector
Sensor
They transform a physical quantity into an electrical signal, converting a certain type of energy into electrical energy
Actuator
Controller
Comparator or error detector
Sensor or transducer
It's responsible for comparing the input signal with the output signal, depending on this error signal
Actuator
Controller
Comparator or error detector
Sensor or transducer
They are responsible for transforming the pressure variable into an electrical signal
Pressure transducer
Flow transducer
Temperature transducer
Level transducer
It can be deduced that a variation in fluid velocity will produce an inverse variation in pressure
Pressure transducer
Flow transducer
Temperature transducer
Level transducer
They measure the speed at which particles move in a fluid
Pressure transducer
Flow transducer
Temperature transducer
Level transducer
They are used to monitor the level of fluid stored in a container or tank
Pressure transducer
Flow transducer
Temperature transducer
Level transducer
Disturbance are signal that benefit a system by modifying its output value and directly altering the behavior of the process
True
False
What type of control system am I?
"Users send instructions using a control, can be tethered or untethered"
Command
Programmable
Sensing
Conditional
What type of control system am I?
"Follow a control program embedded in ROM or reprogrammable"
Command
Programmable
Sensing
Conditional
What type of control system am I?
"Detect features of the environment and react"
Command
Programmable
Sensing
Conditional
What type of control system am I?
"Use logic to determine output based on inputs"
Command
Programmable
Sensing
Conditional
What is used directly to modify the behaviour of a system?
Input
Output
Feedback
Processing
