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Used photocopying machines are returned to the supplier, cleaned, and then sent back out on lease agreements. Major repairs are not made, and, as a result, some customers receive malfunctioning machines. Among eight used photocopiers in supply today, three are malfunctioning. A customer wants to lease four of these machines immediately. Hence four machines are quickly selected and sent out, with no further checking. Find the probability that the customer receives
a No malfunctioning machines.
b At least one malfunctioning machine.
c Three malfunctioning machines.
Describe the charge transfer mechanisms in a voltage doubler, and show that the output terminal voltage is twice the peak of the input AC source voltage. How would you reverse the polarity of the output voltage in such a circuit?
1) What is the difference between Vin and Vo in a voltage clipping circuit with a zener diode 2) Does Vzo of a zener depend on the temperature of the surrpunding 3) Why is it necessary to put a resistor in a voltage regulator cirucit with a zener di..
You put heat into a 500 g solid sample at the rate of 10 KJ/min; it takes 1.5 min for the entire sample to melt completely. What is the latent heat of fusion for this solid
A 5000-VA 480/120-V conventional transformer is to be used to supply power from a 600-V source to a 120-V load. Consider the transformer to be ideal, and assume that all insulation can handle 600 V. Sketch the transformer connection that wil..
A platinum RTD with α = 0.0039 is used with an instrument designed for α = 0.0037. Determine the indicated temperature of the instrument when the actual temperature is 99ºC.
Design and implement a sequence detector using a finite state machine that detects the sequence 1, 1, 0, 1, 0. Consider previous/oldest bits for the sequence detection.
A synchronous sequential machine is to have a single input line and a single output line. Draw a State Diagram (Mealy) and check for redundancies and Then assign binary State Identifiers
Calculate for this load (a) the slip (b) The stator copper loss (c) The total power input if the stator losses are 2000 W, (d) The efficiency (e) The line current (f) The number of complete cycles per minute of the rotor e.m.f.
A car is traveling on a street at 24.6 m/s. An ambulance is behind the car, moving in the same direction and with a speed of 38.7 m/s. The siren on the ambulance is emitting sound at a frequency of 1575 Hz. The speed of sound in the air is 343 m/s..
What is the time constant for a circuit composed of a real inductor (L=.4H and R=50ohms) and a 150 ohm resistor connected in series
Using the equation N(subscript 0)m=gram atomic weight that applies to any element, compute the gram atomic weight values for each of the isotopes. Which of the isotopes is more abundant?
A closed solenoid has a 100 turn coil. That core has a reluctance of 0.8(A-T/Wb). What current is needed in the coil to produce a flux of 200 Wb
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