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Question:
A series resistive inductive load is energised from a 240V (RMS), 50Hz single phase AC supply, such that the load draws 1200W at a power factor of 0.8.
a) Calculate the reactive power and the current supplied to the load.
b) Sketch a phasor diagram for this load condition, showing all circuit voltages and currents.
c) Calculate the capacitance value (μf) required to be placed in shunt with the RL load so as to achieve unity power factor as seen by the supply.
a) The total estimated time for an operation ie assembly of a pin is 2 minutes. If the rating is 120% determine normal time. If total allowances allowed are 10% for that job, calcu
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Evaluate the point of contraflexure: An overhanging beam of 15 m span is carrying a consistently distributed load of 1 kN/m over the length of 10 m at a distance 5 m from the
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i) Illustrate forward path and self loop. ii) Describe transfer function. iii) Which feedback is preferred and why. iv) Write the properties of signal flow graph. v) Il
Modal Dispersion in Step-Index Fibers Determine the core radius of a multi-mode step index fiber with a numerical aperture NA = 0.1 if the number of modes M = 5000 when the wave
(a) A geometrically similar model of spillway is to be laid to a scale of 1 in 50. Evaluate the velocity ratio, discharge ratio and acceleration ratio. (b) If model prototype ra
Write down the maintenance schedule for the following : (a) Spark plug replacement. (b) Engine oil change/ top up period. (c) Steering head bearing.
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