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An electric heater is used to increase the temperature of liquid water in an open tank from 10.0 to 80.0°C in a steady state, steady flow process.
The mass flow rate of the water through the tank is 3.70 kg/s, and the electric heater adds 1500. kW to the water.
Determine the first and second law efficiencies of this system. The temperature of the local environment (ground state) is 10.0°C.
An electric kettle needs six minutes to boil 2 kg of water from the initial temperature of 20"C. The cost of electrical energy required for operation is 12 paise, the rate being 40 paise per kWh.
design a two stage amplifier to meet the following specs undistorted outputat least 10vp-p bandwith from 20hz to
What is the lowest positive frequency at which the CTFT could be non-zero and what is the next-lowest positive frequency at which the CTFT could be non-zero?
A block of copper has a volume of 5.5x10-3 m3 and a mass of 50.0 kg. The specific heat capacity of copper is 385 J/(kgC0). The melting point of copper is 1085 0C. The latent heat of fusion is Lf = 2.05x105 J/kg. The coefficient of volume thermal e..
A 100 MW power station delivers 100 MW for 2 hours, 50 MW for 6 hours and is shut down for the rest of each day. It is also shut down for maintenance for 45 days each year. Calculate its annual load factor.
What is the maximum number of receptacles permited on a 15A; 120V branch circuit. A 20 A 120 V circuit. How many small appliances branch circuits are required to supply receptacles in the kitchen and dining areas of residences
What is Pulse Width Modulation (PWM) ? and what are Uses of PWM Technique and its its functions in Arduino ?
A 40 Ω Resistor, a 5mH inductor, and a 1.25μF capacitor are connected in series. The series-connected elements are energized by a sinusoidal voltage source whose voltage is 600 cos(8000t + 20°) V.
Briefly explain why the maximum usable clock frequency of a ripple counter decreases as moreflip-flops are added to the counter to increase its MOD-number.
Define voltage. Specifically, what does it mean to say that the voltage between two points is +25 volts - Calculate the electric field from this potential. Show that this electric field is conservative.
Compute the polar form of the impedances shown below in rectangular form in parts a and b, and compute the rectangular form of the impedances shown below in polar form in parts c and d
A very small discrete silicon diode (a "100 RA diode") is found to conduct 100 RA at 0.700 V and 1 mA at 0.815 V. Find the values of it and Is which correspond.
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