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1. Why are the insulated water tanks for heat pump systems referred to as "buffer" tanks?
2. Where is the compressor located in most water-source systems?
3. Why do geothermal heat pump systems work better in cold climates than air-source systems?
You are driving your car, and the traffic light ahead turns red. You apply the brakes for 2.70 s, and the velocity of the car decreases to + 4.71 m/s. The car's deceleration has a magnitude of 3.41 m/s2 during this time. What is the car's displace..
Check your result against the appropriate special case of Example 6.9.
When no real time processing is needed the system can be noncausal. Consider the case of averaging an input signal x(n) uner real time conditions. suppose you are given two different filters y{n}= 1/n *(symbol of Sum) x(n-k) on top N-1 at bottom k=..
Briefly describe the primary functions of the following peripheral devices.
The addition of a 20-kvar capacitor bank improved the power factor of a certain load to 0.90 lagging. Determine the complex power before the addition of the capacitors, if the final apparent power is 185 kVA.
Can the generator still deliver the same amount of power to the infinite bus?
Determine the voltage VE and the current IE. - Determine VBC using the fact that the approximation IC = IE is often applied to transistor networks.
A material is found to have a tenth-thickness of 2.3 cm for 1.25-MeV gamma rays. (a) What is the linear attenuation coefficient for this material (b) What is the half-thickness (c) What is the mean-free-path length for 1.25 MeV photons in this materi..
an electric motor operates at 220V rms ,60 Hz, draws 20A rms, and has a power factor of 0.75 lagging. a) what is average power absorbed by the motor b) what value capacitor should be connected in parallel with the motor to give a power factor of 1
Silicon at T = 300 K is doped with arsenic atoms such that the concentration of electrons is n0 = 7 x 1015 cm -3. (a) Find Ec - EF. (b) Determine EF - Ev. (c) Calculate p0. (d) Which carrier is the minority carrier
Question 1) A shunt machine has armature and field resistance of 0.04 ohm and 100 ohm respectively. When connected to a 460 V d.c. supply and driven as a generator at 600 rev/min, it delivers 50 kW. Calculate its speed when running as a motor and tak..
A source of strength 1:5 m2/s at the origin is combined with a uniform stream moving at 9 m/s in the x direction. For the half-body which results, find the stagnation point;
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