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1. List the physics principles that make heat pump operation possible.
2. Why do most heat pumps have two metering devices?
3. What keeps both metering devices from being in the refrigeration circuit at the same time?
A 3 phase, 2 winding, 230kv/115kV, delta-wye, 50MVAtransformer has a series impedance of (4.0 at angle 81 degrees) %and core losses of 1.0% at rated voltage. When the transformer issupplying a load of 40MW at a power factor of 0.80 lagging at rate..
The system uses a 7-cell reuse pattern. If the offered traffic per user is 0.03 Erlangs and the average number of calls per hour per user is 1.5, for an Erlang-C system with a probability of delaying a call being 5%, calculate the traffic load per..
What are Schmitt gates? How does a Schmitt gate overcome the problem of occurrence of an erratic output for slow varying input transitions?
A single phase 220V system draws a current of 15A at a lagging power factor of 0.8. Calculate the value of a capacitor that can be used to improve the power factor of this system to 0.95 lagging.
Develop a description of any three types of IC temperature sensors that are commercially available and description of sensors.
Analysis of link budget DTH QPSK Satellite link, A direct-to-home satellite television system uses a geostationary satellite in orbit above the equator at a longitude of 109 degrees west.
The base width of a npn BJT at a temperature of 300K is 4μm. If the time it takes for an electron to diffuse a distance d is t=d2/Dn, where D is the diffusion coefficient.Calculate α and ß for this BJT. Assume typical electron mobilities and the w..
Design a resistive circuit with 3 or 4 nodes, or meshes that includes one 0.1μF capacitor.
Consider two-dimensional conduction in the semi-circular cylinder shown.- Write the heat equation and boundary conditions for steady state conduction.
define hue (h) in the h-i-s coordinate system. outline how the formula for computation of hue from R-G-B coordinates of a color point may be derived (detailed derivation is not required)
In a 110 V compound generator, the resistance of the armature, shunt and series windings are 0.06, 25 and 0.05 W respectively,
On the slice diagrams, label the inputs to the LUTs (function generators) and draw the connection paths within the slice. Give the function implemented by each LUT.
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