Connect 1 Semester Access Card For Electric Motors And Control Systems
2nd Edition
ISBN: 9781259550195
Author: Petruzella, Frank
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Textbook Question
Chapter 1.1, Problem 8RQ
State the piece of electrical safety equipment thatshould be used to performofthe following tasks:
a. A switching operation where there is a risk ofinjury to the eyes or face from an electric arc.
b. Using a multimeter to verify the line voltage on a3-phase 480 volt system.
c. Opening a manually operated high-voltage disconnect switch.
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Students have asked these similar questions
5. An automatic switch or cutout is allowed in the equipment grounding conductor circuit when
A. there's a redundant equipment grounding conductor in the circuit.
B. the power sources are disconnected when operated.
C. it's bonded around the disconnecting device.
D. it also opens the neutral.
Lockout is required:
During servicing and maintenance where unexpected ener-
gization or start-up of equipment could harm employees.
During repair and replacement work, and during renovation
work.
a.
b.
C.
During modifications or other adjustments to powered
equipment.
d.
All of the above.
Lockout may involve:
Opening a disconnect switch.
b.
a.
Closing a valve.
Placing a block in the equipment.
d. All of the above.
C.
Lockout is the process ci
Shutting off a machine at the end of a shift.
Warning equipment operators about the risks involved in
bypassing a machine guard.
Preventing the flow of energy from a power source to a
piece of equipment, and keeping it from operating.
a.
b.
C.
d.
Preventing mechanics from starting repairs without the
machine operators' knowledge.
Tagout:
Serves as a warning.
b. Physically restrains a person from operating a power source.
Must be applied using specialized tagout tools.
a.
C.
d.
Must be worn like a badge by the employee who is doing
the repairs.…
Please help with the following questions, thank you.
Calculate the following :
1) At what voltage is the switching point?
2) The hysteresis spread ?
Chapter 1 Solutions
Connect 1 Semester Access Card For Electric Motors And Control Systems
Ch. 1.1 - Does the severity of an electric shock increase...Ch. 1.1 - a. Calculate the theoretical body current flow...Ch. 1.1 - Normally a 6 volt lantern battery capable of...Ch. 1.1 - Prob. 4RQCh. 1.1 - What circuit fault can result in an arc flash?Ch. 1.1 - Defineeach of the following terms associated...Ch. 1.1 - Explain why an arc flash is so potentially...Ch. 1.1 - State the piece of electrical safety equipment...Ch. 1.1 - Outline the safety procedure to follow when you...Ch. 1.1 - List three pieces of personal protection...
Ch. 1.2 - Prob. 1RQCh. 1.2 - Prob. 2RQCh. 1.2 - Prob. 3RQCh. 1.2 - List the seven steps involved in a...Ch. 1.2 - Prob. 5RQCh. 1.2 - Prob. 6RQCh. 1.2 - How are the standards contained in the...Ch. 1.2 - Explain the difference between a Code Article and...Ch. 1.2 - Prob. 9RQCh. 1.2 - Prob. 10RQCh. 1.2 - Prob. 11RQCh. 1.2 - Prob. 12RQCh. 1.2 - The voltage between the frame of a 3-phase 208...Ch. 1.2 - Prob. 2TCh. 1.2 - Prob. 3TCh. 1.2 - A hot stick is to be used to open a...Ch. 1.2 - An employee is contemplating using his lockoutlock...Ch. 1.2 - Prob. 1DTCh. 1.2 - Prob. 2DTCh. 1.2 - Why can birds safely rest on high-voltage...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.Similar questions
- 2. When working on a high - voltage system , it is best to keep anyone who is not part of the ser vice away from you and the car by creating a buffer zone around the car . Technician A makes sure the outside edges of the zone are at least one foot away from the car . Technician B places B orange cones to define the outer boundaries of the zone. Who is correct ?arrow_forwardIn the conduit diagram shown in Figure 1–3, determine how many wires are in each conduit between each piece of equipment. Identify each wire terminal connection and the quantity of wires, as shown in the example, above the disconnect switch.arrow_forward5. Why isn't solder permitted to be relied on for grounding electrode connections?A. The solder increases the chances of a ground-fault event occurring.B. The heat from the solder weakens the connection and exposes it to physical damage.C. The use of solder doesn't meet the requirements for corrosive influences.D. The connection's integrity can be negatively affected by heat during a ground-fault event.arrow_forward
- 6. when seeking to measure the voltage of an industrial power supply (600 Volts AC) an electrician needs to do the following to prepare the Simpson 260 meter for measurement (insert the words to make the following statements correct). a. Set the function switch to b. The black lead should be inserted in the jack. C. The red lead should be inserted in the jack. d. The range switch should be set to the position. Did you note the safety warnings in this section? Fairly significant, eh?! Nothing to mess around with!! 7. Why must you "zero" the meter (adjust it for zero (0)) when measuring resistance? 8. Describe the steps needed to accomplish the task of zeroing the meter. (4pts) For the following questions, refer to section 4.19 in the Simpson meter manual. 9. The Rx 1 resistance range is intended for resistances between and Ω. 10. The R x 100 range is intended for resistances between and Ω. 11. The Rx 10,000 range is intended for resistances over 0450…arrow_forwardHow would you use a " process of elimination " in a troubleshooting an air conditioning electrical system?arrow_forward18. What should be done with light sources that are connected at each end of a cable while it's being repaired?A. They should be turned off and disconnected.B. They should be turned off only.C. Nothing, they can be left alone.D. They should be disconnected only.arrow_forward
- Describe a situation where you would need to use a combination single-pole/three-way switch.arrow_forwardX.a- The figure shows a fault condition in an ungrounded electrical system. Which of the following will occurbecause of the fault in this system?A. Only the overcurrent protector at Point A will trip open.B. The ground fault will heavily damage the service.C. Nothing will happen until a second ground fault occurs.D. The overcurrent protection will trip, shutting off all the line side power.arrow_forwardWhat is the Lock Out Tag Out system used by electricians?arrow_forward
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