What are the factors responsible for the execution of Spark?.
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Please answer--What are the factors responsible for the execution of Spark?.
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- Q3 j(a) With the aid of suitable drive circuitry and its waveform, briefly discuss the "Discontinuous' and Continuous’ conduction operation of single-phase fully controlled rectifier for separately excited DC motor.A step-up chopper has input voltage of 220 V and output voltage of 660 V. If the conducting time of the IGBT based chopper is 100 micro- sec, then duty cycle will be a. -0.66 b. 0.7 c. 1.66 d. 0.66DA shunt generator is used to charge a battery of 100 cells in series. If each cell has a terminal p.d. of 2.5V at the completion of charge and is of internal resistance 0.001 Q calcu- Cate the e.m.f. to be generated to give a charging current of 15A at the end of charge. Assume that the armature and field resistances are 0.2 2 and 200 2 respectively and the cables onnecting the generator to the battery have a resistance of 0.6 Q.
- Asap, determine if True or False A. The more the number of commutator segments in a dc machine, the ripple voltage will be low. B. The application of a wave winding dc machine is in low voltage, high current application.The brushes of DC machines are usually made of and are in the shape of rectangular block. Select one: O a. Carbon Graphite O b. Ceramic OC. Steel d. Phosphor4. Explain the relationship between back emf E, terminal voltage V and coil voltage drop IR in DC motor and generator respectively. i. Describe how the field strength affect the performance of DC motor and generator. ii. Explain how an external resister changes the DC motor and generator performance.
- Questions: 1. Are the experimental and theoretical values of voltages and currents match? Indicate the percentage of differences. 2. Give possible reasons for any discrepanciesFill the blanks with suitable following terms (AND gate, Potential Transformers (PT), cathode ray oscilloscope CRO, electronic switch Current Transformers (CT), DC component, cathode ray tube (CRT), AC component, electron.gun. 1.The heart of a ............is the................. the electron beam is generated, accelerated, and deflected in accordance with the input signal. 2. Power measurements in high-voltage high current circuit can be effectively done by the use of...and.. ...in conjunction with conventional wattmeter. 3. The sig ...ose frequency is to be measured is converted into a train of pulses (Using Comparator for example), one pulse for each cycle of the signal and applied continuously to an...A 4. In Average Responding Voltmeter, the AC signal is first applied to the blocking capacitor used at the input to block any..................in the input voltage. 5. Dual Trace Oscilloscope This CRO has a single.....................whose electron beam is split into two by an…High voltage engineering
- a) It is important to manage heat dissipation for power control components such as Thyristor. Draw a typical heatsink for a semiconductor power device and the equivalent heat schematic. b) Explain the rate of change of voltage of a thyristor in relation to reverse-biased. c) Draw and explain how a 3-phase fully controlled converter operates.Describe the purpose of a PV and PQ curves. Draw the curves and explain its position (stability & unstable areas) Describe the difference between each curve by reference to the curves and explain when each one would be usedSolve it clearly please and I don't want it by hand writing
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