SCADA system ( Supervisory Control and Data Acquisition ) MCQ's
1. What is the full form of SCADA?
Explaination:- SCADA is Supervisory Control and Data Acquisition. It is computer-based monitoring and control system that collect, display and store information to support the control of equipment, devices, and automated functions.
2. Name the software developed by siemen for SCADA ?
Explaination:- SIMATIC wincc is a supervisory control and Tata acquisition and human machine interface system from simens. carda system are used to monitor and control physical process involved in industry and infrastructure on a large scale and over long distances.
3. When did the SCADA start?
Explaination:- SCADA started in the 1960s. During this time the mainframe computers were used for the storage of data from energy plants, chemical plants, and other big industries.
4. Which of the following is not the component of a SCADA system?
Explaination:- The components of a SCADA based control system includes operator/engineer station, database server, PLC controller, I/O system, sensors, and actuators. These components need to communicate with each other. The sparger controller is a type of aeration and agitation system.
5. The functions of the SCADA systems performed by using ________
Explaination:- All of the above are correct.
6.Which of the following input is taken by PLC ?
Explaination:- Analog Inputs include temperature sensors/transmitters, current sensors, voltage sensors, and others that can convert a physical quantity to an electrical signal. Digital Inputs include push buttons, limit switches, relay contacts, proximity switches, photo sensors (On/Off), pressure switches, and more. Digital inputs devices are available in both DC as well as AC and some are voltage-independent such as a switch contact.
7.Which of the following is SCADA software?
Explaination:- Some of the commonly known software are: InduSoft Web Studio Litmus Edge GENESIS64 Ignition SCADA SIMATIC SCADA Action.NET RS View32 DAQFactory EisBaer Scada FactoryStudio Foxboro IASCADA
8. PLC operates on the following signals
Explaination:- PLC operates on digital signals. The PLC uses a programmable memory to store/ save instructions and specific functions that include ON/OFF control, counting, arithmetic, timing, sequencing, and also data handling.
9. PLC has become popular, because it performs _________ functions?
Explaination:-It is an industrial computer control system that continuously monitors the state of input devices and makes decisions based upon a custom program to control the state of output devices.
10. Fault tolerance of SCADA system means:
Explaination:- The ability of a SCADA system to manage and coordinate the system error is known as fault tolerance. Fault tolerance represents the capability of any system or equipment to sustain its operation during the presence of a fault.
11.In SCADA system network, the Repeaters are used to increase the?
Explaination:-SCADA (Supervisory control and data acquisition system): It is an automation control system. It is a centralized system that monitors and controls entire sites, ranging from an industrial plant to a complex of plants across the country. It is used in industries like ener.
12.Which part of the SCADA system initiates almost all communication with remote sites and interface with an operator?
Explaination:- A remote terminal unit (RTU) is a microprocessor-controlled device that interfaces measured physical quantity to a distributed control system or SCADA system by transmitting telemetry data to a master system, and by using messages from the master supervisory system to control connected objects.
13.What signals can a PLC understand ?
Explaination:- PLC is a solid-state device that understands the binary from the analog input. It is object code is firstly converted to the source program to binary object code which will run on the PLC’s microprocessor and download the object code from the PC to the PLC.
14.What is the maximum number of inputs and outputs that are there in a small PLC ?
Explaination:- PLCs are classified into following the main categories based on the number of input and outputs they can handle: Nano PLC: PLC that has less than 32 input/output (I/O) functions. Micro PLC: PLC that has more than 32 Input/Output (I/O) points but not more than 128 input/output (I/O) functions. Small PLC: PLC that has more than 128 Input and Output (I/O) points but not more than 256 I/O functions. It does not include any I/O enhancements fitted along with the basic system. Hence according to options, the maximum number of inputs and outputs that are there in a small PLC is 200. Medium and Large PLC: PLC that controls a large number (>256) of discrete elements using very fast input/output (I/O) scan times.
15 What is the role of OPC in SCADA?
Explaination:- Developing and maintaining SCADA applications.
Nice questions
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