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A sinusoidal voltage is generated by an 85 turn coil, of dimensions 20 cm by 16 cm. The coil is rotated at 3000 rev/min, with its longer sides parallel to the faces of a pair of poles. If the flux density produced by the poles is 0.5 T, calculate
(a) the amplitude of the generated emf,
(b) the frequency,
(c) the r.m.s. and average values.
Assessment on Electricity and Circuit Theory, What part of a cable are insulators and conductors? Describe, in terms of charged particles, why some objects are electrically attracted to each other, while others repel each other?
Determine the amount of power dissipated in 3 kohm resistor? The circuit diagram and question is given in the picture file.
A digital TV station transmits on Channel 7 with an ERP of 18 kW. The signal from this TV station is received 50 miles away via a LOS path with a receiving antenna that has a gain of 8 dB on Channel 7.
Complete the following table of flip-flop excitation values required to produce the indicated flip-flop state changes, where y indicates the present state and Y the desired next state of the flip-flop.
A 460-V, three-phase,60-Hz system supplies power to a 10-kVA, delta-connected resistor load; a 50-kVA, 0.86 power factor induction motor, and a wye-connected synchronous motor that is operating at 0.62 power factor leading
What technical possibilities can you think of to outwit a system of this kind?
Determine the value of the constant c such that the following functions are valid probability functions: A. p(x) = cx/20, x = 1,2,3,4,5,6 and zero elswhere. B. p(x) = c(X^2 + 1), x = 1,2,3,4,5, and zero elsewhere.
Suppose there is enough shading on the bottom cells to cause the lower diode to start conducting. Draw the new "shaded" I-V curve for the module.
Discuss linearity, time-invariance and causality of the following systems
Filling of gas bottles is a part of a product line where the bottles are moved by pneumatic cylinders- Draw the position-sequence diagram. What kind of switches would you use (signals from actuators). So what is a type of the switch?
Find the maximum value of K for which the system is stable
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?
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