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1. List some common questions customers ask service technicians.
2. Explain what is meant by a systems approach to troubleshooting.
3. Give an example of an airflow problem that can look like a refrigerant charge problem if a service technician is only looking at system pressures.
4. List the stages of troubleshooting.
Draw the circuit diagram of a 4-bit binary adder-subtractor using a 4-bit binary adder and XOR gates. Treat the adder asa block component with appropriate inputs and outputs. you doNOT need to show the internal gates of the adder.
Heat is generated at a volumetric rate qccc in a rod of radius and length L.- Write the heat equation and boundary conditions for steady state two-dimensional conduction.
An AC motor with impedance Z = 4.2 + j3.6 Ω is supplied by a 220 V, 60 Hz source. Determine the reactive power delivered to the load.
how much work is done(by a battery,generator,or some other source of potenial difference) in moving Avogadro's number of electrons from an initial point where the electric potenial is 9.00V to a point where the electric potenial is -5.00V
a) At what time t1/2 have half the atoms decayed b) How many atoms have decayed at t = 40 ns c) Draw a graph of Nexc as a function of time. Show in the graph the lifetime, 1t1/2, 2t1/2, 3t1/2 and 4t1/2.
A toroid is fille with liquid oxygen that has a magnetic susceptibility of 4*10^-3. The toroid has 2000 turns and carries a current of 15 A. Its mean radius is 20 cm, and the radius of its cross section is 8 mm. (a) What is the magnetization
Calculate the sag in a 90-yard span of a 0.035 -in^2 overhead line when covered with ice to a radial thickness of 5/8 in, in a wind that exerts a pressure of 9 lb/ft^2, assume the breaking load as 1620 lb and the weight of the conductor as 0.1 lb/..
The power delivered to the element is p(t) = 4.9e-8t W. Compute the current in the element as a function of time, the voltage across the element as a function of time, and the total energy delivered to the element in the time interval 0
In a CD player, the sampling rate is 44.1 kHz and the samples are quantized using a 16-bit/sample quantizer. what is The resulting number of bits for a piece of music with a duration of 50 minutes.
You need to prepare one page executive summary for the report - Analysis of Conversion of PI Buses Fleet from Diesel to Electricity.
Determine the reflection coefficients for the corresponding FIR lattice filter.
A 3-phase induction motor has a 4-pole, star-connected stator winding and runs on 50 Hz with 400 V between lines. The rotor resistance and standstill reactance per phase are 0.4 Ω and 3.6 Ω respectively.
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