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WorksheetsAutomation - Unit 1
Total questions: 78
Worksheet time: 39mins
Name
Class
Date
1.
PLC Stands for
a)
Programmable Logic Controller
b)
Programmable Logic Circuit
c)
Programmable Logic Computer
d)
Programmable Level Controller
2.
PLC parts are mounted on
a)
RACK & CHASIS
b)
Isolation Stages
c)
Program Monitor
d)
OPTO isolators
3.
The abbreviations NO and NC represents the electrical state of switch contacts when_______________.
a)
Power is applied
b)
Power is not applied
c)
The switch is actuated
d)
The switch is not actuated
4.
NC push button connected in hardware & NC contact in software then the coil connected to the NC contact will be ___________.
a)
ON
b)
OFF
c)
Short
d)
Toggle
5.
A limit switch is usually actuated by_________.
a)
Hand
b)
Pressure
c)
Contact with an object
d)
An electromagnet
6.
A thermocouple ,when heated _______.
a)
Produces a small dc voltage
b)
Increases its resistance value
c)
Produces a small AC voltage
d)
Decreases its resistance value
7.
PLC uses _____ Design .
a)
Assembly
b)
Command
c)
Manufacturing
d)
None of the above
8.
__________ is used to communicate with PLC .
a)
Analog Module
b)
Input Module
c)
Program Monitor
d)
Debugger
9.
PLC has replaced.
a)
electronic circuit
b)
relay logic
c)
computer
d)
none
10.
Disadvantage of PLC is .
a)
security
b)
too many contacts
c)
pilot running
d)
fixed program application
11.
In PLC the user program is stored in .
a)
ROM
b)
RAM
c)
EPROM
d)
EEPROM
12.
Input modules provide an interface between.
a)
Input modules and the CPU
b)
Inputs and the CPU
c)
Output modules and field devices
d)
The CPU and output modules
13.
The programming device must be connected to the controller.
a)
At all times
b)
When entering a programme
c)
When monitoring a programme
d)
both b&c
14.
Electrical isolation is provided so that there is no physical electrical connection between the CPU and output field devices. This isolation is usually accomplished by.
a)
power supply
b)
rectifier
c)
output module
d)
holding register
15.
In PLC the user program is stored in .
a)
ROM
b)
RAM
c)
EPROM
d)
EEPROM
16.
Digital I/O modules operate on.
a)
24V AC supply
b)
24V DC supply
c)
5V AC supply
d)
12V AC supply
17.
EXAMPLE OF I/P MODULE
a)
PUSH BUTTON
b)
RELAY COIL
c)
MOTOR
d)
BOTH A & B
18.
EXAMPLES OF OUTPUT MODULE.
a)
PILOT LIGHT
b)
LED
c)
LCD
d)
NONE
19.
The logical OR function is similar to.
a)
In parallel
b)
In series
c)
inverted logic
d)
both (A) &(c)
20.
If two NC contacts are connected in series that satisfies _______Gate logic.
a)
AND
b)
NAND
c)
OR
d)
NOR
21.
_________contact can be used to satisfy NOT gate condition.
a)
NC
b)
NO
c)
BOTH NO AND NC
d)
NONE OF THE ABOVE
22.
If two NO contacts are connected in series that satisfies _______Gate logic.
a)
AND
b)
NAND
c)
OR
d)
NOR
23.
If two NC contacts are connected in parallel that satisfies _______Gate logic.
a)
AND
b)
NAND
c)
OR
d)
NOR
24.
CPU CONISISTS OF ______________ .
a)
MICROPROCESSOR
b)
MEMORY
c)
POWER SUPPLY
d)
ALL THE ABOVE
25.
AND GATE,INPUTS ARE HIGH, OUTPUT IS.
a)
LOW
b)
HIGH
c)
NONE OF THE ABOVE
d)
ALL
26.
OR GATE,IF ANY OF THE INPUTS ARE HIGH,OUPUT IS.
a)
LOW
b)
HIGH
c)
BOTH
d)
NONE
27.
How many registers PLC does have?
a)
3
b)
2
c)
1
d)
NONE OF THE ABOVE
28.
Types of TIMER are
a)
TON Timer
b)
TOFF Timer
c)
BOTH
d)
NONE
29.
A timer that initiates an action at a specified time after enable input is made high.
a)
ON delay timer
b)
OFF delay timer
c)
Retentive timer
d)
none of the above
30.
A timer that initiates an action at a specified time after enable input is made low.
a)
on delay timer
b)
off delay timer
c)
retentive timer
d)
none of the above
31.
A single input timer is called
a)
retentive timer
b)
non retentive timer
c)
none of the above
d)
all of the above
32.
HSC stands for.
a)
High Sequence Counter
b)
High standard Counter
c)
High Speed Counter
d)
none
33.
Types of counter are
a)
UP Counter
b)
DOWN Counter
c)
UO-DOWN Counter
d)
all of the above
34.
A counters input signal can come from an external device, such as a limit switch or sensor, or from.
a)
timer
b)
RTD
c)
LVDT
d)
stepper motor
35.
proximity switch can be actuated.
a)
Without any physical contact
b)
By a change in flight intensity
c)
By a change in capacitance
d)
By all of the above
36.
___________is a device or software that is used to communicate with the machines or groups of machines in the plant or production area.
a)
HMI
b)
scada
c)
MMI
d)
None of the above
37.
LOI stands for ___________
a)
line of action
b)
letter of intent
c)
Local Operator Interface
d)
lack of information
38.
HMI directly connect the human with the ___________
a)
computer
b)
MMI
c)
machine
d)
object
39.
OIT stands for _____________
a)
Office of information technology
b)
Operator Interface Terminal
c)
outsourced information technology
d)
None of the above
40.
the ___________ has all the necessary tools to control the process.
a)
operator
b)
receiver
c)
transmitter
d)
all of the above
41.
HMIs capture data from a system such as ___________
a)
Data Handling
b)
Alarm handling
c)
both
d)
none
42.
The __________ includes functions like data trending, alarm handling, data logging and recipes.
a)
data handler
b)
trend
c)
Alarm handler
d)
IOT
43.
Trends in SCADA / HMI is very useful to ____________ to diagnose useful process parameters from the past saved trend data.
a)
track
b)
monitor
c)
calculate
d)
all of the above
44.
a record of all the process data in the form of a graph is called as ___________
a)
trend
b)
track
c)
scada
d)
HMI
45.
___________ are the graphs that display the values of data in real-time and the graph updates for every instant of time we have specified.
a)
Real-time Trends
b)
Historical Trends
c)
all of the above
d)
None of the above
46.
____________ are used to display the data in real-time at the same time the old data can be retrieved and viewed on the run time.
a)
Historical Trends
b)
Real-time Trends
c)
all of the above
d)
None of the above
47.
HMI and ________ need to be compatible.
a)
SCADA
b)
PLC
c)
track
d)
MTU
48.
Once the PLC and the HMI are __________ then whatever is programmed into the HMI can be used to monitor and control PLC functions.
a)
talking
b)
operating
c)
listening
d)
reading
49.
A _________ is a set of rules for communication among networked devices.
a)
talking
b)
Data saving
c)
Both a. & b.
d)
protocol
50.
Advantages of HMI ____________
a)
Internet of things
b)
Data saving
c)
high cost
d)
Both a. & b.
51.
In data translation, the operator would be able to see the ____________ of the system and it can be controlled.
a)
trend
b)
graphical representation
c)
Supervisory Control and Data Acquisition
d)
downtime
52.
IOT can be considered as the ____________
a)
collection of the devices
b)
output
c)
SCADA
d)
HMI
53.
A human machine interface can ____________ operating costs by replacing hundreds of selectors, pushbuttons, indicator lights and more
a)
increase
b)
reduce
c)
remain same
d)
NONE OF THE ABOVE
54.
SCADA stands for__________
a)
software disk array
b)
space development agency
c)
spicetree design agency
d)
Supervisory Control and Data Acquisition
55.
The SCADA system helps in managing the communication of system issues to mitigate ____________
a)
downtime
b)
uptime
c)
total time
d)
network interfaces
56.
This central control system consist of communication equipment, ______________
a)
network interfaces
b)
input/ output devices
c)
software.
d)
all of the above
57.
SCADA is a system of hardware and ___________ elements that facilitate process control.
a)
architecture
b)
software
c)
input/ output devices
d)
network interfaces
58.
__________ is working on collecting data and information via distributed devices like (remote terminal unit) RTU, PLC
a)
HMI
b)
RTU
c)
SCADA
d)
MTU
59.
SCADA send control actions to the process depending on the _______________
a)
architecture
b)
I/O control signals
c)
MTU
d)
information.
60.
The independent PLCs and RTUs in a SCADA system perform ____________ on field devices while being supervised by a SCADA/HMI software package on a master computer.
a)
HMI
b)
I/O control signals
c)
information.
d)
Remote terminal unit
61.
RTU stands for______________
a)
real time unit
b)
return time unit
c)
Remote terminal unit
d)
NONE OF THE ABOVE
62.
The __________ can monitor and control the field devices even when the operator in not present by means scheduler programed
a)
MTU
b)
RTUs
c)
SDH/ SONET
d)
optocoupler
63.
___________ are used to transmit the recorded data toward the supervisory system.
a)
transmitter
b)
signals
c)
trends
d)
RTUs
64.
_____________ can also be used for larger systems like railways and power stations.
a)
SDH/ SONET
b)
Program Monitor
c)
optocoupler
d)
computers
65.
___________convert the parameters from the physical form to electrical form as continuous (analog) or discrete (digital) signals readable by the remote station equipment (RTUs or PLCs).
a)
Field Instruments
b)
Master Terminal Unit
c)
SCADA
d)
Industries
66.
MTU stands for __________
a)
Maximum transmission unit
b)
Master Terminal Unit
c)
mobile terminated unit
d)
mounted terminal
67.
In Architecture of SCADA ___________ is the Control Level which includes the control devices like PLC, PC.
a)
Leval 5
b)
Leval 1
c)
Level 2
d)
Level 1
68.
_______________ were used in the earlier Supervisory Control and Data Acquisition systems
a)
Minicomputers
b)
optocoupler
c)
microcontroller
d)
microprocessor
69.
The Early or Monolithic SCADA Systems is also known as _____________
a)
third Generation
b)
second Generation
c)
First Generation
d)
Fourth Generation
70.
____________ processing and real-time data were shared to perform control operations.
a)
text
b)
Command
c)
trend
d)
graph
71.
Internet of Things SCADA Systems is also known as ___________
a)
third Generation
b)
first Generation
c)
second Generation
d)
Fourth Generation
72.
Fiber optic connections or ____________ is used for data transmission between the nodes.
a)
HMI
b)
Ethernet
c)
profibus
d)
profinet
73.
full form of wan is ____________
a)
Wide area network
b)
west australia newspapers
c)
wide area news
d)
none of the above
74.
___________Used to control HVAC, central air conditioning, lighting, entry/ exit gates, etc.
a)
Oil and Gas
b)
Industries and Buildings
c)
Water and sewage treatment
d)
Manufacturing & Processing
75.
____________Used for managing inventories for controlling over manufacturing/ stocking.
a)
Water and sewage treatment
b)
Oil and Gas
c)
Manufacturing & Processing
d)
Industries and Buildings
76.
____________Used for regulating subway electricity, automating traffic signals/ railway crossing and live tracking of flights/ trains/ buses.
a)
Public Transport
b)
Manipulator
c)
HMI
d)
SCADA
77.
_________ used to monitor and control the distributed equipment used like filters and valves
a)
Industries and Buildings
b)
Water and sewage treatment
c)
Manufacturing & Processing
d)
Oil and Gas
78.
__________ are mainly used to monitor a wide data variety like currents, voltages, temperature, pressure, water levels
a)
HMI
b)
RTU
c)
MTU
d)
SCADA
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