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A synchronous generator has a rotor with six poles and operates at 60 Hz.
(a) Determine the speed of prime mover of the generator.
(b) Repeat part (a) if the generator has 12 poles.
(c) Repeat part (a) if the generator has 2 poles.
Consider the following statements: "Heat is a form of energy, and energy is conserved. The heat lost by a system must be equal to the amount of heat gained by the surroundings.
. A typical home will use about 40. kWh of electricity per day (1 kWh 1 kilowatt hour; 1 kW 1000 J/s). Assuming 8.0 hours of useful sunlight per day, calculate the minimum solar panel surface area necessary to provide all of a typical home's e..
How would the answer change if the combustion were only 75% complete?
Consider the same silicon-aluminum metal-semiconductor junction. The cross-sectional area of the junction 1s 10 µm2. Assume that Be is 30 A K -2 cm-2 and the ideahty factor n is 1. Calculate the reverse saturation current and plot..
A spherical ball of benzoic acid (diameter = 1.5 cm) is submerged in a pool of still water. The solubility and diffusivity of benzoic acid in water are 0.03 kmol/m3 and 1.25 x 10-9 m2/srespectively.
A jacketed vessel is to be used as a reactor. the vessel has an internal diameter of 2m & it fitted with a jacket over a straight section 1.5m long. both the vessel & jacket walls are 25mm thick.
Also find the source voltage that would yield I = -8µA.
What is the ratio of CO2 to H2O in the product gas? Use this result to suggest a method for determining the molecular formula of the paraffin.
Determine the highest possible temperature that can be obtained when liquid octane (C8H18) at 25 degrees C is burned steadily with air at 25 degrees C.
(1) Determine the mass and the temperature of the steam in an insulated piston-cylinder arrangement if sufficient steam is admitted to displace the piston by one cubic foot. The cylinder originally is empty, and the piston main- tains a constant pres..
Human-Machine systems defined as a combination of humans and equipment interacting to achieve some desired result. Types of human-machine systems are Manual systems, Mechanical systems, and automated systems. **Systems Components are The human, Th..
What is the melting point at standard conditions for ammonia? Boling point is given -33.4C.
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