help me in these questions pls write the questions with the and by (Computer) 1- Explain how the circuit below works to perform its main function? i. Zener diode is short circuited when voltage across it rises beyond its breakdown voltage. ii. Radiation from light emitting diode is detected by a phototransistor without having any physical contact. iii. The circuit prevents the LED from having the wrong polarity or too high voltage. iv. The circuit prevents the alternating signals by rectifying it using a diode. a. All the answers. b. i, ii and iii only. c. i, iii and iv only. d. i, ii and iv only. ======== 2- Which of the following statement is most probably INCORRECT in explaining the working principle of an engine management system? a. Microprocessor is used to process incoming signal including position, speed, timing, flow, and temperature. b. The operation of valves and spark ignition is in sequence following the stroke action. c. The timing of the sequence is fixed. d. The microprocessor’s output signal is used to control the behavior of the combustion engine. =========== 3- The following statements, explain the working principle of a closed-loop control system. i. Comparison element compares the required or reference value with the measured value to know the error. ii. Control element then decides what action to take to improve the error. iii. Correction element produces the change necessary in the process based on the output of the control element. iv. The measurement element provides the required control value. a. i, iii and iv only. b. i, ii and iii only. c. All the answers. d. i, ii and iv only. ========== 4- How does a diaphragm measure fluid pressure? a. By measuring the movement of the iron rod in the LVDT. b. By assessing the change in Wheatstone bridge resistance. c. By observing the vibration of the corrugations in the diaphragm. d. By measuring the amount of displacement at the center of the diaphragm due to the difference in pressure at both side.
Analysis of Diode
It is a semiconductor device in electronics applications where only a one-way current is required. It is like a one-way switch that allows current to flow in one direction only. A diode has two terminals, a cathode, and an anode. The cathode is the negative terminal that carries electrons, while the anode is the positive terminal that carries holes. Although no element has holes, it just means that there is a free space for electrons. Diodes are used to convert AC to DC. As we know, AC shifts between positive and negative cycles and DC stays positive constantly. As the diodes allow current only in one direction, they filter out the AC signal’s negative cycle and only keep the positive one.
Working and Construction
In civil engineering, construction means the application of principles of science and mathematics for building bridges, dams, buildings, roads, highways, tunnels, airports, structures, etc. Different branches of science, like physics and chemistry, are extensively applied to design and analysis in construction. Material properties, the science of atmospheric conditions (like solutions, mixtures, etc.), the impact of environmental factors like, corrosion and acidity are some of the primary knowledge of chemistry which are used by civil engineers to carry out construction. Estimation of forces, application of laws of mechanics, fluids mechanics, soil mechanics, etc. are some of the fundamental concepts of physics, which are well applied in construction works. Building construction and structural engineering are two of the most primary areas in civil engineering that parallelly applies principles of both chemistry and physics to carry on construction works.
Property of Diode
An electronic component that facilitates the directional flow of current is known as a diode. According to the direction of the flow of current, the resistance of a diode changes from zero to Infinity.
help me in these questions pls write the questions with the and by (Computer)
1-
i. Zener diode is short circuited when voltage across it rises beyond its breakdown voltage.
ii. Radiation from light emitting diode is detected by a phototransistor without having any physical contact.
iii. The circuit prevents the LED from having the wrong polarity or too high voltage.
iv. The circuit prevents the alternating signals by rectifying it using a diode.
========
2-
The operation of valves and spark ignition is in sequence following the stroke action.
The timing of the sequence is fixed.
The microprocessor’s output signal is used to control the behavior of the combustion engine.
===========
3-
i. Comparison element compares the required or reference value with the measured value to know the error.
ii. Control element then decides what action to take to improve the error.
iii. Correction element produces the change necessary in the process based on the output of the control element.
iv. The measurement element provides the required control value.
==========
4-
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