Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
In some industrial processes, it is necessary to sense the condition of a system at one location and, depending on that condition, activate an operation at a location far from that location. For example, in a manufacturing environment, when the count of the finished parts exceeds some value, as sensed in the storage area, a milling machine could be shut down or started. A proximity switch could be used for sensing and a networked (e.g., Ethernet-based) control system could be used for process control. Since activation of the remote process usually requires a current that is larger than the rated load of a proximity switch, one would have to use a relay circuit, which is operated by the proximity switch. One such arrangement is shown in Figure P6.12. Note that the relay circuit can be used to operate a device such as a valve, a motor, a pump, or a heavy-duty switch. Discuss an application of the arrangement shown in Figure P6.12 in the food-packaging industry. A mutualinduction proximity sensor with the following ratings is used in this application:
Sensor diameter = 1 cm
Sensing distance (proximity) = 1 mm
Supply to primary winding = 110 ac at 60 Hz
FIGURE P6.12
Load current rating (in secondary) = 200 mA
Discuss the limitations of this proximity sensor
Compare the maximum allowable joist spacing for class II ply form ½ in. thick and 1 in. thick. Draw a sectional view showing slab, sheathing, and joists.
Mud is stopped using a wall made from 1.2 m high x 0.25 m wide rectangular concrete blocks as shown in figure below. Blocks density is 2700 kg/m3, mud density is 1800 kg/m3, and friction coefficient between ground and concrete blocks is f = 0.3.
pneumatic nail gun uses .02 ft3 of air at least 100 psia and 1 btu of energy per nail tank used must supply enough air
consider a well 12 inches in diameter. there are 1000 feet of 10x4 inch collars and 9000 feet of 5x4.26 inch drill
What is the composition, in weight percent and atom percent, of an alloy that contains 105.0 kg iron, 20.3 kg of aluminium, and 2.0 kg of copper?
The temperature component is 0 to 1 Hz. Experimentally verify the noise level, time-constant, and accuracy of your system.
an air-standard brayton cycle is utilized as a jet propulsion engine. the aircraft flies at an altitude of 5000 m at a
if the isentropic efficiency of the compressor is 72 and the pressure ratio is 2.21 for an inlet pressure and
Determine the number of storage bits required in the controller memory so that the accuracy of the joint is as close as possible to, but less than, its repeatability. Use six standard deviations as the measure of repeatability.
Find constants a, b and c such that the vector field defined by
Consider a sample of thickness L = 25 mm and a square planform of width W = 250 mm. In an experiment per- formed under steady-state conditions, temperature mea- surements made at the lower and upper surface of the sample yield values of T1 = 150°C..
If heat engines efficiency can be increased by increasing the highest temperature why do we not increase the temperature further for our power plants? What could be done still to raise the temperature of the high temperature reservoir? What could be ..
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd