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A 2.4-m high 200-m2 house is maintained at 22°C by an air-conditioning system whose COP is 3.2. It is estimated that the kitchen, bath, and other ventilating fans of the house discharge a houseful of conditioned air once every hour. If the average outdoor temperature is 32°C, the density of air is 1.20 kg/m3, and the unit cost of electricity is $0.10/kWh, the amount of money ?ovented out?? by the fans in 10 hours is
(a) $0.50
(b) $1.60
(c) $5.00
(d) $11.00
(e) $16.00
A 15 hp, 209V,three-phase,six pole, Y-connected induction motor has the following parameter values per phase: R1= 0.128 ohm, R'2=0.0935 ohm Xeq- X1 + X'2 = 0.49 ohm. The motor slip at full load is 3%, and the efficiency id 90%.
A random variable X is normally distributed with unknown mean u and unknown standard deviation sigma. Find u and sigma if it is known that the probability X is less than 10 is 0.6950 and the probability that exceeds 6 is 0.7..
Create a message signal and a carrier signal and apply a simplified amplitude modulation (DSB-SC-AM) to see the modulated signal in time domain.
If the earth is considered to be a metal sphere(radius˜6371[km]), how much charge Q must bedeposited on its surface in order for an arc to be established inthe air. If the earth's surface was charged to the value byremoving all the electrons from ..
Systems that operate under real time conditions need to be causal - that is, they can only process present and past inputs. When no real time processing is needed the system can be non-causal.
Find the Thevenin equivalent ith respect to terminals a and b using source transformation ONLY, ent of the circuit-
An optimizing compiler has been developing for the bad store machine with a measurement shown below. The compiler discard 50% ofthe ALU instruction although it cannot reduce, store branches,close, load, compute for the unoptimized CPI.
Assessment on Electricity and Circuit Theory, What part of a cable are insulators and conductors? Describe, in terms of charged particles, why some objects are electrically attracted to each other, while others repel each other?
Write a software that programs counter 2 to generate an 80 KHz square wave if the CLK input to counter 2 is 8MHZ.
plug the following items into a single circuit breaker in your house (120 V): 0.3 hp fish tank pump, a 9000 watt space heater, a 1800 watt hair dryer, a TV using 409 watts. Calculate the minimum rating of the circuit breaker necessary to safely ca..
Let x(n) be the input signal to a discrete-time filter with impulse response hi(n) and let yi(n) be the corresponding output. These sequences are written such that the first value islocated at instant n=0. (a) Plot x(n) and y1(n).
The Dynamics of the system are determined by the second order transfer function of the sensing element , which has a natural frequency of ωn=40 rad/sec and a damping ratio =0.1.
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