INDUSTRIAL MOTOR CONTROL
7th Edition
ISBN: 9780357670590
Author: Herman
Publisher: CENGAGE L
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
thumb_up100%
Chapter 2, Problem 1RQ
To determine
The name of the symbol from the given options.
Expert Solution & Answer
Explanation of Solution
The symbol shown in Figure 1 is used in a schematic of control circuits to designate normally open contact.
Two parallel horizontal lines or vertical lines are used to indicate a normally open contact. The normally open contact in a circuit schematic depicts that the circuit is open and no current flow is present.
Thus, the correct answer is “option d. Normally open contact”.
Want to see more full solutions like this?
Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
Using Matlab calculate the following performance
characteristics for a Tesla Model S undergoing the
4506 drive cycle test
Prated
Trated Ebat
80kW
254 Nm 85kWh/1645kg
MUEH
A
rwheel
0.315M 133.3
C
0.491
Ng
ng 7g
8.190.315
8.19 0.315 7ed= 85%
Ebpt
35-956
DRIVE
AXLE
Ebfb
chę =85%
V
Minverter
H/A
Battery
Charger
En
AC
Pry
9) required energy output from the motor to drive this cycle
Cassume no regenerative braking)
b) range
of the Tesla Model S for this drive cycle
(assume no regenerative breaking
c) estimated mpge
cycle
of the Tesla Model S for this drive
Cassume no regenerative breaking)
d) Recalculate parts abc now assuming you can regenerate
returns correctly due to inefficiency.
from braking. Be careful to handle the diminishing
energy
braking makes in terms of required
e) Quantify the percentage difference that regenerative
required energy, range
and mpge,
DI
L
Ta
a
ra
OL
HW.5.1 Determine the vertical displacement of joint C on the truss as shown by using Castigliano's
theorem. Let E = 200(109) GPa and A = 300 mm²
4 m
E
20 kN
3 m
3 m
B
D
30 kN
C
3-55 A multifluid container is connected to a U-tube,
as shown in Fig. P3–55. For the given specific gravities
and fluid column heights, determine the gage pressure at
A. Also determine the height of a mercury column that
would create the same pressure at A. Answers: 0.415 kPa,
0.311 cm
Chapter 2 Solutions
INDUSTRIAL MOTOR CONTROL
Ch. 2 - Prob. 1RQCh. 2 - The symbol shown is: a. Normally closed float...Ch. 2 - The symbol shown is a(n)
iron core...Ch. 2 - The symbol shown is: a. Normally open pressure...Ch. 2 - The symbol shown is: a. Double acting push button...Ch. 2 - If you were installing the circuit in Figure 2–22,...Ch. 2 - Referring to the circuit in Figure 222, should the...Ch. 2 - Prob. 8RQCh. 2 - Prob. 9RQCh. 2 - When reading a schematic diagram, are the control...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- I need help answering parts a and barrow_forwardRequired information Water initially at 200 kPa and 300°C is contained in a piston-cylinder device fitted with stops. The water is allowed to cool at constant pressure until it exists as a saturated vapor and the piston rests on the stops. Then the water continues to cool until the pressure is 100 kPa. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Water 200 kPa 300°C On the T-V diagram, sketch, with respect to the saturation lines, the process curves passing through the initial, intermediate, and final states of the water. Label the T, P, and V values for end states on the process curves. Please upload your response/solution by using the controls provided below.arrow_forwardA piston-cylinder device contains 0.87 kg of refrigerant-134a at -10°C. The piston that is free to move has a mass of 12 kg and a diameter of 25 cm. The local atmospheric pressure is 88 kPa. Now, heat is transferred to refrigerant-134a until the temperature is 15°C. Use data from the tables. R-134a -10°C Determine the change in the volume of the cylinder of the refrigerant-134a if the specific volume and enthalpy of R-134a at the initial state of 90.4 kPa and -10°C and at the final state of 90.4 kPa and 15°C are as follows: = 0.2418 m³/kg, h₁ = 247.77 kJ/kg 3 v2 = 0.2670 m³/kg, and h₂ = 268.18 kJ/kg The change in the volume of the cylinder is marrow_forward
- A piston-cylinder device contains 0.87 kg of refrigerant-134a at -10°C. The piston that is free to move has a mass of 12 kg and a diameter of 25 cm. The local atmospheric pressure is 88 kPa. Now, heat is transferred to refrigerant-134a until the temperature is 15°C. Use data from the tables. R-134a -10°C Determine the final pressure of the refrigerant-134a. The final pressure is kPa.arrow_forwardThe hydraulic cylinder BC exerts on member AB a force P directed along line BC. The force P must have a 560-N component perpendicular to member AB. A M 45° 30° C Determine the force component along line AB. The force component along line AB is N.arrow_forward! Required information A telephone cable is clamped at A to the pole AB. The tension in the left-hand portion of the cable is given to be T₁ = 815 lb. A 15° 25° B T₂ Using trigonometry, determine the required tension T₂ in the right-hand portion if the resultant R of the forces exerted by the cable at A is to be vertical. The required tension is lb.arrow_forward
- What are examples of at least three (3) applications of tolerance fitting analysis.arrow_forwardThe primary material used in the production of glass products is silica sand. True or Falsearrow_forwardWhich one of the following is the most common polymer type in fiber-reinforced polymer composites? thermosets thermoplastics elastomers none of the abovearrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Refrigeration and Air Conditioning Technology (Mi...Mechanical EngineeringISBN:9781305578296Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill JohnsonPublisher:Cengage Learning
Understanding Motor ControlsMechanical EngineeringISBN:9781337798686Author:Stephen L. HermanPublisher:Delmar Cengage Learning
Electrical Transformers and Rotating MachinesMechanical EngineeringISBN:9781305494817Author:Stephen L. HermanPublisher:Cengage Learning
Understanding Motor ControlsMechanical EngineeringISBN:9781305498129Author:Stephen L. HermanPublisher:Cengage Learning
Welding: Principles and Applications (MindTap Cou...Mechanical EngineeringISBN:9781305494695Author:Larry JeffusPublisher:Cengage Learning
Automotive Technology: A Systems Approach (MindTa...Mechanical EngineeringISBN:9781133612315Author:Jack Erjavec, Rob ThompsonPublisher:Cengage Learning
Refrigeration and Air Conditioning Technology (Mi...
Mechanical Engineering
ISBN:9781305578296
Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher:Cengage Learning
Understanding Motor Controls
Mechanical Engineering
ISBN:9781337798686
Author:Stephen L. Herman
Publisher:Delmar Cengage Learning
Electrical Transformers and Rotating Machines
Mechanical Engineering
ISBN:9781305494817
Author:Stephen L. Herman
Publisher:Cengage Learning
Understanding Motor Controls
Mechanical Engineering
ISBN:9781305498129
Author:Stephen L. Herman
Publisher:Cengage Learning
Welding: Principles and Applications (MindTap Cou...
Mechanical Engineering
ISBN:9781305494695
Author:Larry Jeffus
Publisher:Cengage Learning
Automotive Technology: A Systems Approach (MindTa...
Mechanical Engineering
ISBN:9781133612315
Author:Jack Erjavec, Rob Thompson
Publisher:Cengage Learning