Electric Motors and Control Systems
2nd Edition
ISBN: 9780073373812
Author: Frank D. Petruzella
Publisher: McGraw-Hill Education
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 4.4, Problem 6T
A through-beam photoelectric sensor appears to be missing detection of small bottles on a high-speed conveyor line. What could be creating this problem?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
3) The probe in AFM techniques is
4) Nanoscale materials are so interesting, especially in the industry sector due to
5)
and
and------
are considered one of the important metal nanoparticles that are used as vigorous
catalysts in chemical reactions.
6) The synthesis process of nanoparticles that use the liquid phase as bulk materials is process.
7) The process that uses ultrasound frequency greater than 20 kHz is known as
process.
is outside the sphere.
8) The process that depends on using atom by atom to fabricate nanoparticles are called
9) Micelles are called reverse micelles if is inside the sphere and
10) The pressure equal to 50 Torr is normally equal to ------Pa.
The theoretcial resolution of a TEM operating at 83 kV is givens as 0.0323 nm. Calculate the half aperture angle in radians
Relative to the atomic force microscopy (AFM), Name three forces that can be sensed by an
AFM cantilever and explain how the spring constant of a cantilever can affect the output
image in AFM.
Chapter 4 Solutions
Electric Motors and Control Systems
Ch. 4.1 - Prob. 1RQCh. 4.1 - Prob. 2RQCh. 4.1 - What do the terms normally open and normally...Ch. 4.1 - The types of enclosures used to house motor...Ch. 4.1 - Prob. 5RQCh. 4.1 - Compare the operation of momentary and maintained...Ch. 4.1 - What is the OSHA requirement for resetting...Ch. 4.1 - Prob. 8RQCh. 4.1 - Explain how a push-to-test pilot light operates.Ch. 4.1 - Compare the way in which pushbutton and selector...
Ch. 4.1 - Prob. 11RQCh. 4.2 - Define the term mechanically operated switch.Ch. 4.2 - In what way are limit switches normally actuated?Ch. 4.2 - A control application calls for an NC held open...Ch. 4.2 - List four common types of limit switch operator...Ch. 4.2 - Prob. 5RQCh. 4.2 - Prob. 6RQCh. 4.2 - For what types of machine control applications are...Ch. 4.2 - How does a fluid capillary tube temperature switch...Ch. 4.2 - Prob. 9RQCh. 4.2 - Prob. 10RQCh. 4.3 - In general, how do sensor pilot devices operate?Ch. 4.3 - What is the main feature of a proximity sensor?Ch. 4.3 - List the main component of an inductive proximity...Ch. 4.3 - Explain the term hysteresis as it applies to a...Ch. 4.3 - How is a two-wire sensor connected relative to the...Ch. 4.3 - In what way is the sensing field of a capacitive...Ch. 4.3 - For what type of target would a capacitive...Ch. 4.3 - Prob. 8RQCh. 4.3 - Name the three most common scan techniques for...Ch. 4.3 - What are the advantages of fiber optic sensing...Ch. 4.3 - Outline the principle of operation of a Hall...Ch. 4.3 - Outline the principle of operation of an...Ch. 4.3 - List the four basic types of temperature sensors...Ch. 4.3 - Compare the way in which a tachometer and magnetic...Ch. 4.3 - Outline the principle of operation of an optical...Ch. 4.3 - What approach is usually taken to measurement of...Ch. 4.3 - Prob. 17RQCh. 4.4 - Define the term actuator as it applies to an...Ch. 4.4 - In what ways are electromagnetic relays employed...Ch. 4.4 - Prob. 3RQCh. 4.4 - Prob. 4RQCh. 4.4 - Prob. 5RQCh. 4.4 - Prob. 6RQCh. 4.4 - Prob. 7RQCh. 4.4 - Prob. 8RQCh. 4.4 - Prob. 9RQCh. 4.4 - What is the basic difference between an open-loop...Ch. 4.4 - Prob. 11RQCh. 4.4 - Prob. 12RQCh. 4.4 - In what way docs a double-break contact differ...Ch. 4.4 - Prob. 14RQCh. 4.4 - Prob. 1TCh. 4.4 - Prob. 2TCh. 4.4 - Prob. 4TCh. 4.4 - Prob. 5TCh. 4.4 - A through-beam photoelectric sensor appears to be...Ch. 4.4 - Prob. 1DTCh. 4.4 - Prob. 2DTCh. 4.4 - Prob. 3DTCh. 4.4 - What does the range adjustment on a float switch...Ch. 4.4 - A stepper motor cannot be bench-checked directly...
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
- Explain the difference between an analog device and a digital device.arrow_forwardShow which instrument has higher signal throughput: instrument a = focal length is 250mm and collimating mirror has a diameter of 2 inches; instrument b = focal length is 3 cm and collimating mirror has a diameter of 1 cm.arrow_forward(i) Write the name of the working principle used in Ultrasonic flow sensor. (ii) Draw a neat diagram of Ultrasonic flow sensor. Also mark all the parts. (iii) Explain the working of Ultrasonic flow sensor.arrow_forward
- 2. An UV stepper (Exposure Machine) has a NA numerical aperture of 0.3 and uses a light source with a wavelength of 436nm. What is the minimum feature size you would expect the stepper to be able to produce? What would be the maximum thickness of resist that the stepper could successfully expose?arrow_forwardWith a neat sketch explain the working principle of the Scanning TunnelingMicroscope.arrow_forwardConsidering only the thermal effect to define emf exposure limit is sufficient debate between considering only the thermal effect to define emf exposure limits is not sufficient, non thermal effect also need to be consideredarrow_forward
- Show the real image of each temperature sensor, indicate its basic parts.arrow_forwardInductive sensors are widely used in industry in many diverse applications because they are: Answer:arrow_forwardFind the mistake in the program. % To calculate the number of photons clc; clear all; io=2.7e-8; tc=29; isc=350; pin=800; k=1.381e-23; e=1.602e-19; t=273+tc; vmax=0.526; imax=(e*vmax)* (isc+io)/(k*t+e*vmax) pmax=vmax*imax; efficiency=(pmax/pin)*100 imax=(e*vmax)* (isc+io)/(k*t+e*vmax) No error efficiency=(pmax/pin)*100 t=273+tc;arrow_forward
- B-Define Fabry-Perot Fiber-Optic Temperature Sensor?arrow_forwardReferring to Figure 1, Explain the sensor mechanism in terms of block diagram. Indicate all basic functional elements. (i.e Primary Sensing Element, Signal Conditioning Element, Signal Processing Element, Data Presentation Element etc) Can you suggest how to increase sensitivity of this sensor? (See Figure 1) attached image Figure 1 Float-Operated Fuel Level Gauge used in automobilesarrow_forward2. Figure 1 shows a sensor consists of a core, an armature and a variable air gap. The core with 3.0 cm depth and 10000 relative permeability has 200 coil turns. On the other hand, the armature is a steel plate of thickness 0.2 cm and has similar relative permeability with the core. Assuming the relative permeability of air is unity and the permeability of free space is equal to 4x x 10-7 H.m, calculate the inductance of the sensor for air gaps of 0 mm and 2 mm. Please write the answers in 3 decimal places. 2.0 cm 1.0 cm 6.0 cm 3.0 cm 1.5 cm Figure Iarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Understanding Motor ControlsMechanical EngineeringISBN:9781337798686Author:Stephen L. HermanPublisher:Delmar Cengage Learning
Understanding Motor Controls
Mechanical Engineering
ISBN:9781337798686
Author:Stephen L. Herman
Publisher:Delmar Cengage Learning
Understanding Thermal Radiation; Author: The Efficient Engineer;https://www.youtube.com/watch?v=FDmYCI_xYlA;License: Standard youtube license