EBK NETWORK+ GUIDE TO NETWORKS
7th Edition
ISBN: 8220102452480
Author: ANDREWS
Publisher: YUZU
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Expert Solution & Answer
Chapter 12, Problem 1RQ
Program Description Answer
The component Remote Terminal Unit (RTU) is to convert analog data to digital data but it cannot control the physical system.
Hence, the correct answer is option “B”.
Expert Solution & Answer
Explanation of Solution
RTU:
- RTU is an electronic device controlled by a microprocessor.
- In the industrial system, a RTU device installed at a key location that senses the attributes of the physical system.
- It converts the analog data to digital data and the main purpose of an RTU is to interface the SCADA (Supervisory Control and Data Acquisition) to the physical objects.
Explanation for incorrect options:
SCADA:
Supervisory Control and Data Acquisition is a network includes the servers, communication channels, and software.
Hence, the option “A” is wrong.
PLC:
Programmable Logic Controller (PLC) is the digital computers used mainly for automating the electromechanical processes.
Hence, the option “C” is wrong.
HMI:
Human Machine Interface (HMI) is the computer includes hardware and software.
Hence, the option “D” is wrong.
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Students have asked these similar questions
For a hierarchical carry look-ahead adder, GO can be written like below. Find the gate delay needed to obtain GO without fan-in and with a fan-in of 3 inputs.
GO=g7+p7g6+p7p6g5+p7p6p5g4+p7p6p5p4g3+p7p6p5p4p3g2+p7p6p5p4p3p2g1+p7p6p
5p4p3p2p1g0
Select one:
a.
O b.
GOO
B
B
GO without fan-in limitation will require 3 gate delays
GO with fan-in limitation of 3 will require 5 gate delays
GO without fan-in limitation will require 4 gate delays
• GO with fan-in of 3 will require 3 gate delays
C.
• GO without fan-in limitation will require 5 gate delays
GO with fan-in limitation of 3 will require 3 gate delays
O d.
GO without fan-in limitation will require 2 gate delays
GO with fan-in limitation of 3 will require 4 gate delays
1. Show that S₁ = S2 if and only if S₁ U S2 = S₁n S2.
2. Show that if S1 and S2 are finite sets with |S₁ = n and |S₂| = m, then
S₁ U S2 ≤n+m.
3. If language L is regular and is given by L ={awa : w = {a, b} *}
Then show that L² is regular.
Problem 3: Consider the two-link planar elbow manipulator shown below with link information: a₁ = 3,
a₂ = 3.
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ai
| di | 0i |
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02.
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01
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(a) Find the location of the end-effector P° if the joint angles are:
0₁ = 140°, 0₂ = 30°
(b) Find the values of joint variables 01, 02 if the robotic manipulator is commanded to reach the desired
location of Pº = [4.5, 3,0]. Notice there are possibly two sets of solutions.
(c) Also sketch the two poses of the robot for the computed joint variables.
Page 5 of 7
Chapter 12 Solutions
EBK NETWORK+ GUIDE TO NETWORKS
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