1. When the AC voltage is at 45 degrees of it travel what is the voltage at that instant.(sine value@45 degrees =.707) The maximum voltage of the circuit is 169VAC. (Formula is maximum voltage (E max) times sine of 45 degrees = point voltage.) 2. On three phase power each phase is separated from the [...]
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TUNE YOUR LOOP: Fundamentals of Industrial Process, Measurement, and Control
1. Which of the following types of valves has the highest gain when the valve is nearly closed? 2. A controller in which an increase in output to the manipulated variable results in a decrease in the controlled variable is called? 3. Which of the following control modes causes the controller output to increase or [...]
TUNE YOUR LOOP: OPC: The Windows to the World are Open
1. The OPC Charter: 2. The OPC Security Reference Model includes: 3. The current OPC standards include all except: 4. All these are features of an OPC server except: 5. The OPC Foundation: What are your answers before you read ahead? 1. d 2. d 3. b 4. c 5. d From the [...]
ISA Automation Week 2012 Program Chair Q&A
This year’s ISA Automation Week will be held in Orlando, Fla., on 24–27 September at the Orange County Convention Center. It will offer a world-class, unbiased technical program built around “operational and technical excellence.” ISA Insights recently sat down with Peter Martin, ISA Automation Week 2012 program chair, to find out more about this year’s [...]
TUNE YOUR LOOP: Picking the Right Bus—A Comparison of Field and Device Networks
1. Most fieldbuses use what physical topology? 2. The Modbus/TCP protocol suite contains what protocols? 3. Which of the following can NOT be done by a repeater: 4. DeviceNet has a maximum message payload of 5. Foundation Fieldbus allows What are your answers before you read ahead? 1. d 2. a 3. b 4. [...]
TUNE YOUR LOOP: Mathematics for Instrumentation Technicians
1. Convert 83.16 inches of water column to PSI. 2. You have a fuel air ration of 10 parts fuel to 40 parts air what percentage of fuel makes up the total mixture? 3. Express 200 Micro volts in volts. 4. Express 5x 103 in a decimal number. 5. Express the decimal number of 2,300 [...]
TUNE YOUR LOOP: Troubleshooting Instrumentation and Control Systems
1. Standard analog instrument pneumatic signals are: 2. From ANSI/ISA-5.1-1984, “Instrument Symbols and Identification:” The line symbol ———- denotes a: 3. A ____________ control system evolved from central computer control of the 1960s and was developed initially for continuous flow processes that required loop, analog, and limited discrete control. 4. A ________ is a microcomputer-based [...]
TUNE YOUR LOOP: Using RFID/RTLS to Track Industrial Assets
1. For the longest Tag operational lifetime, which flavor of RFID should be used? 2. Which asset tracking technology relies on readers/signposts? 3. Are regulatory allowed RFID frequencies consistent throughout the world? 4. Choose the name of the organization that regulates the use of the frequency spectrum within the United States. What are your [...]
TUNE YOUR LOOP: Using the ANSI/ISA99 to Secure Your Control System
1. Which is of the following is NOT an element of the ISA99.00.02 – Selected Security Counter Measures group? 2. “Countermeasures” in cyber security are measures taken to: 3. Why would a company issue security policies for industrial networks? 4. A key factor for the success of a cyber security program is: What are [...]
Certified Control Systems Technician® (CCST®) Level I Review Course (TS00)
1. A pressure gauge that reads 100 PSIA is indicating _____ PSI. 2. The specific gravity of a gas is the ratio of the density of the gas to the density of ____. 3. A temperature of 273.15º Kelvin is the same as ______ºCelsius. 4. A circuit has a 100 Ω resistor, a 50 Ω [...]