Figure Q1(a) 100 Ka 20 Ka 10 Ka + 30V I Ka PC R, 0.1 Ka 1 10 100 1000 Im/m 400 ILLUMINATION (a) (b) RISISTANCE
Protection System
A system that protects electrical systems from faults by isolating the problematic part from the remainder of the system, preventing power from being cut from healthy elements, improving system dependability and efficiency is the protection system. Protection devices are the equipment that are utilized to implement the protection system.
Predictive Maintenance System
Predictive maintenance technologies are designed to assist in determining the state of in-service equipment so that maintenance can be scheduled. Predictive maintenance is the application of information; proactive maintenance approaches examine the condition of equipment and anticipate when it should maintain. The purpose of predictive maintenance is to forecast when equipment will fail (depending on a variety of parameters), then prevent the failure through routine and corrective maintenance.Condition monitoring is the continual monitoring of machines during process conditions to maintain optimal machine use, which is necessary for predictive maintenance. There are three types of condition monitoring: online, periodic, and remote. Finally, remote condition monitoring allows the equipment observed from a small place and data supplied for analysis.
Preventive Maintenance System
To maintain the equipment and materials on a regular basis in order to maintain those running conditions and reduce unnecessary shutdowns due to unexpected equipment failure is called Preventive Maintenance (PM).
insturumentation and measurment
![(a) What is the definition of a transducer? [Hint: conclude the definition from
Figure Q1(a)]
Q1
(b) Analyze then fill in the empty boxes of the Figure Q1(a), with suitable
explanation text.
(c) An electrode-diaphragm pressure transducer has plates whose length is 2 x 10-
'm and width of 3 x 10³m, and whose distance between the plates is 1 x 10
³m. Calculate its capacitance in picoFarad (pF) if it measures air pressure. The
dielectric constant of air is k= 1.
(d) The relay of Figure Q1(d)(a) is to be controlled by a photoconductive cell
with the characteristics shown in Figure Q1(d)(b). The circuit delivers 10 mA
at a 30V setting when the cell is illuminated with about 400Im/m². The circuit
becomes de-energized when the cell is dark. Calculate;
(i) The required series resistance.
(ii) The level of the dark current](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F42aa55d1-864a-4205-bb8a-99f28c8e89b2%2F4c136462-0d25-4c6d-bcbe-7ec9831b1690%2F31pod9g_processed.png&w=3840&q=75)
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