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a ppl frequency synthesizer has an output frequency of 470 MHz. A divideby10 prescaler is used. The reference frequency is 10 KHz. what is the frequency step increment?
A 1.2 MW wind turbine has a rotor diameter of 64 m. the turbine operates in an area with an average wind velocity of 7.5 m/s and the air density of 1.18 kg/m^3. the turbine power coefficient including the unit efficiency is 42.8 percent.
an amplifier has three amplification stages and a 1-dB attenuator in cascade. Assuming that all the impedances are properly matched, what is the overall gain if the amplification factors are 5, 10, and 6 dB
Find the transformation ratio of a transformer having 350 turns on the secondary winding and 7000 turns on the primary. What voltage must be applied to the primary of the transformer to develop an open-circuit secondary voltage
Then, solve each Problem using hand calculations. A three-phase, 765-kV, 60-Hz transposed line is composed of four ACSR 1,431,000, 45/7 Bobolink conductors per phase with flat horizontal spacing of 14 m. The conductors have a diameter of 3.625 cm ..
A three phase synchronous generator operates onto a grid bus of voltage 33 kv (line to line). The armature reactance of the machine is 2 ohms per phase and the leakage reactance is 3 ohms per phase.
The voltage ratings are 4800v rms and 240v rms for the primary and secondary windings, respectively. The transformer is rated to 10KVA. Now we want to use this transformer at 120Hz. Discuss the factors that must be considered in setting ratings ap..
With conditions remaining the same as in part (a), we would like to reduce the relative deadline for T3 to improve the quality of service. What is the shortest deadline that we can choose for task T3 such that all tasks will meet their deadlines
The loop transfer function of a single-loop negative feedback system is: L(s) = Gc(s)G(s) = K(s + 2.5)(s + 3.2) / (s2(s + 1)(s + 10)(s + 30)) This system is called conditionally stable because it is stable only for a range of the gain K
A transformer is used to match an 8 ohm speaker to a 500ohm audio line. What is the turns ratio of the transformer what is the input voltage and output voltage when 15W is being delivered to the speaker
Develop an I/O port decoder, using a PLD, that generates 16-bit I/O strobes for the following 16-bit I/O addresses: 1000H-1001H, 1002H-103H, 1004H-1005H, 1006H-1007H, 1008H-1009H, 100AH-100BH, 100CH-100DH, and 100EH-100FH.
Two dc motors are compared. the first one is a 4hp dc motor which draws a current or 0.7A when the field is connected to a 150V source. the second, a 600 hp motor draws a field current of 5A when the field is connected to a 300V dc source.
we know Ktw=1 Nm(rad/s) and its's rated torque 30Nm for the synchronous frequency 60 H. If this motor is running at 60Hz, its load torque changes from 30 to 10 Nm, what is the new motor speed.
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