Engineering ScienceLinear Negative Temperature Coefficient (NTC) Engineering Assignment Help

Assignment Task

Engineering courses (mechanical, Aerospace, Motorsports, mechatronics, and automotive,
Q1 (a) Determine the resistance, at room temperature, of a copper wire having a diameter of 1.0mm and a length of 200m. You may assume that the resistivity of copper at room temperature is .
(b) A DC generator has an EMF of 24V and a full-load rated current of 2A. When a load resistance R is connected across it drawing the full rated current of the generator, the load voltage is found to be 23V. Determine the internal resistance of the generator and its voltage regulation.
(c) A linear negative Temperature coefficient (NTC) thermistor is used in the circuit of FigureQ1(c) to provide an output voltage Vo representing the temperature measured by the NTC thermistor. The datasheet of the NTC thermistor states that its resistance at 0oC is10 k? and this drops to 500? when the temperature is increased to 100oC. Given that R2=1k? and VS=20V:
Q1(c)
(i) Determine an expression for the resistance of the thermistor in terms of the temperature T.
(ii) Determine the output voltage when the temperature is 25oC?
(iii) Use MS_EXCEL to plot the variations of the output voltage as the temperature varies from 0 to 100 degrees Celsius.
(d) A DC voltage source has an emf of 60V and an effective internal resistance of 6ohms. A load resistance of 10ohms is connected across the source:
(i) Determine the power delivered by the source to the load.
(ii) Use EXCEL to plot the variation of the power delivered by the source as the load is varied from 0 ohms to 20 ohms in steps of 2 ohms. Comment on your graph.
(e) Use the superposition principle to determine the current in the load resistance RL shown in the circuit of Figure Q1(e).

Q2 This question is about the circuit in FigureQ2 and given that:
Q2 (a) Reduce the circuit to the left of terminals a-b to its Nortons equivalent circuit.
(b) Reduce the circuit to the right of terminals a-b to its Thevenin's equivalent circuit.
(c) A load resistance is now connected between terminals a-b. Using parts (a) and (b) and the superposition principle, find the current in the load resistance.
(d) Calculate the power dissipated in the above load and if the load remains connected for 10 minutes, find is the energy converted to heat in the load.
Q.B1Consider the system in figure QB1. There are two points, PA and PB , which represent two objects in motion. The first object, PA , is launched from a certain height y0 = 6 m from the ground level, at the initial velocity v0 = 8 m/s, with an initial inclination angle, relative to the x (horizontal) axis ?0 = 45 degrees. This object (PA) will reach ground (i.e., y = 0 m) at a certain time tf, and at a certain horizontal distance xf from the origin O of the reference system. The second point, PB, represents an object that is travelling on ground, following a straight trajectory along the horizontal direction at a constant acceleration a and starting from an initial velocity of 0 m/s at x=0. Assume that the two objects PA and PB reach the same distance xf at the same time tf. Assume the value of the gravitational acceleration is 9.81 m/s2.

ThisEngineeringAssignment has been solved by our EngineeringExperts at Exam Question Bank. Our Assignment Writing Experts are efficient to provide a fresh solution to this question. We are serving more than 10000+Students in Australia, UK & US by helping them to score HD in their academics. Our Experts are well trained to follow all marking rubrics & referencing style.

Be it a used or new solution, the quality of the work submitted by our assignment Experts remains unhampered. You may continue to expect the same or even better quality with the used and new assignment solution files respectively. Theres one thing to be noticed that you could choose one between the two and acquire an HD either way. You could choose a new assignment solution file to get yourself an exclusive, plagiarism (with free Turnitin file), expert quality assignment or order an old solution file that was considered worthy of the highest distinction.