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A hydro-electric power station has a reservoir of area 2.4 square kilometres am; capacity 5 x 106 m3. The effective head of water is 100 metres. The penstock, turbine and generation; efficiencies are respectively 95%,90% and 85%.
(i) Calculate the total electrical energy that can be generated from the power station.
(ii) If a load of 15,000 kW has been supplied for 3 hours, find the fall in reservoir level.
An autotransformer with a total of 600 turns has its secondary winding embracing 200 turns. The 600 turns are connectred to a 60Hz, 2400V driving voltage. A load connected to the secondary draws 4.8kVA at 0.6 power factor lagging.
Try by means of specific experiments to find out what this "piece of equipment" or measuring instrument could be used for.
why was the system designed with a 16 dB link margin?
Write an instruction sequence to subtract the 6-byte number stored at $800-$805 from the 6-byte store a $810-$805, and save the result at $900-$905
A disk drive has a constant failure rate and an MTTF of 4,000 hr. What will the probability of failure be for 2-year of operation
Find the force and stroke that results at F2
Determine I, VR, and VC in phasor form. - Calculate the total power factor, and indicate whether it is leading or lagging.
What is the effect of a frequency difference between the carrier and local oscillator on output quality? Show mathematically.
(The output generates the 2's complement of the input binary number) Show that the circuit can be constructed using Exclusive-OR gates. Can you predict what the output functions are for a 5-bit 2's complement
The counter should increment on the rising edge of an input signal we'll call COUNT. Another input called CLEAR should have the effect of setting the counter to zero if CLEAR = 1 when COUNT is asserted.
If 1000J of energy is required to move 9x10^19 electrons through alamp having a resistance of 25Ω. Find the current through the lamp and the voltage
What types of companies are most likely to adopt cloud-based CRM software services? Why? What companies might not be well-suited for this type of software?
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