Describe very!!! SIMPLY and with the aid of sketches/diagrams (OF THE 3-PH SYNCHRONOUS GENERATOR)!!! , the features and operating characteristics (how it works) of a large 3-ph synchronous generator.
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Describe very!!! SIMPLY and with the aid of sketches/diagrams (OF THE 3-PH SYNCHRONOUS GENERATOR)!!! , the...
Power generations 1. The output voltage of a synchronous generator is a function of the a. speed of rotation and polarity of the field current. b. speed of rotation and strength of the field electromagnet. c. speed of rotation and input torque. d. speed of rotation only 2. The equivalent circuit for one phase of a three-phase synchronous generatoir operating at constant speed and fixed field current is a. identical to that of a dc generator b. very similar to...
3 Control Systems commonly use PID controllers. With the aid of sketches or diagrams, explain the conceptual basis of the operation of a PID controller. (3 marks) 4. A 1000 litre containment tank catches the outflow from a processing apparatus which has 800 litres of water with 2 g of chemical agent dissolved in it. Additional supply comes into the tank at 3 litres/hr containing 5 g/litre of the chemical agent. The solution leaves the containment tank at 3 litres/hr....
Please write out your own solution with explinations. Thankyou (a) With the aid of a labeled sketch, describe an apparatus for the generation of x-rays. (2 marks) (b) With the aid of labeled sketches, describe the three primary physical mechanisms for the absorption ofx-rays in solids. (2 marks) (c) Make a sketch of a typical x-ray spectrum generated by a hospital apparatus, labeling three primary features of the spectrum (3 marks) (d) For an x-ray apparatus containing a molybdenum target...
(2A4 pages) With the aid of diagrams, describe how the body’s adaptive immune system responds to an infection. (Pharmacology)
(ii) With the aid of diagrams and appropriate equations describe eth fluid behaviour of blood and how the action of red blood cells and plasma proteins contribute to these properties.
3. (30) A simple power system, shown below, is made up of a synchronous generatcr connected to a synchronous motor through a couple of transformers and a transmission line. The reactances of the different elements of the system are all given in pu as: Xsg-0.5 X of each transformer-10 % Xsm-0.5 X transmission line 0.3 The synchronous motor is connected to an infinite bus Hint: The great advantage of an infinite bus is that it always remains constant and our...
A 3 -phase, \(60-\mathrm{H} 2\), synchronous generator has the following data:Rated MVA \(=22.8 \mathrm{MVA}\)Rated voltage \(=13.8 \mathrm{kV}\)\(X_{d}=1.8\) pu on rated MVA and rated voltage base \(X_{d}^{\prime}=0.3\) pu on rated MVA and rated voltage base CT ratio \(=1200 \mathrm{~A}: 5 \mathrm{~A}\)PT ratio \(=14.4 \mathrm{kV}: 120 \mathrm{~V}\)a) Explain why it is important to have synchronous generator under-exciation or loss of excitation protection. [5 marks]b) Design a loss of excitation relay for this generator based on the standard single mho circle design, and...
1. With the aid of diagrams describe the phospholipase C signalling pathway from ligand binding to intracellular effects (55%). Explain how G proteins AND kinases act as switches in the pathway (45%).
3. With the aid of a well labelled diagram, describe the features of an image formed by a prism. 4. Briefly describe three ways by which prisms are used in the assessment of squint and heterophoria.
Consider a 3-phase, 4 pole, 60Hz, 450 V synchronous generator rated to supply 1687.5 kVA to a ship distribution system requiring a 0.8 lagging power factor. (a) If this machine was operating at rated conditions, what would the real (P) and reactive (Q) power and the current being supplied? (b) If the generator has an efficiency ( η ) of 95%, what torque does the prime mover provide? (c) What is the speed of the rotor (rpm)?