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1. Explain the following terms. Draw neat diagrams if needed. a. Covalent Bonds b. Bandgap Energy c. Donor and acceptor atoms d. Zener and Avalanche Breakdown e. Depletion Region f. Line and Load Regulation g. Thermal Voltage h. Excess Minority Carrier Life Time
In transformer designs, often you can find an air gap in the core. In all the electric machines, there is an air gap between the stator and rotor. In both cases, flux will go through both core material and the air gap.
A lot of size N= 30 contains three nonconforming units. What is the probability that a sample of five units selected at random contains exactly one nonconforming unit what is the probability that it contains one or more non conformances
Several copies of the signal, shifted in time and frequency as well as attenuated, are received-that is, the transmission is done over multiple paths each attenuating and shifting the sent signal. The sum of these versions of the signal appears qu..
Determine the probability that the receiver correctly receives the codeword for the first time on the k-th transmission. Also determine the average number of transmissions until the receiver correctly receives the codeword.
Resisitive load, A 4:1 step down transformer uses a 60Vac source on the primary windings.
a circular coil of 150 turns is made of flexible wire. the cross-sectional area of the coil is 200cm2. it is placed
The input power to the geenrator is 100hp. When the generator is operating at rated values and unity power factor, the generator is 80% efficient. a.) Find the generator speed in rpm and rad/sec. b.) Find the mechanical torque supplied to the gener..
a certian voltage is +10V for 20ms and -10 V for the succeding 20msand continues osciallating back and forth between these two valuesat 20ms intervals. The voltage is present across a 50 ohmresistor. over any 40ms interval
A constant magnetic field passes through a single rectangular loop whose dimensions are 0.35 m × 0.55 m. The magnetic field has a magnitude of 2.1 T and is inclined at an angle of 65° with respect to the normal to the plane of the loop.
Sketch and explain the interface of PPI 82C55A to the 8086 microprocessor in minimum mode.Interface 8 LEDs to the port B of 82C55A. Interface 8 keys to theport A. Assume that port A of 82C55A is located in the I/O memoryspace at FF0H.
A circuit element is hidden inside a potato sack and draws a current which varies with time t, measured in seconds, i(t) = 0.04 e(-4400 · t) Amps, while the voltage drop across this element is given by the function v(t) = 6.061 (1 - e(-4400 · t)) ..
A three phase motor is connected to a 60Hz electrical source. The motor spins at 600rpm. Find the number of poles in the machine. The output of the above motor is connected to the input of a generator.
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