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A 5-hp, 1,150-rev/min shunt motor has its speed controlled by means of a tapped field resistor as shown in Figure P18.31. With the tap at position 3, determine the speed of the motor and the torque available at the maximum permissible load.
Design a circuit using JK flip-flops that takes in a binary stream B0B1B2B3 and outputs 1 at a time t if the stream recieved thusfar (i.e. BoB1..Bt-1Bt), when read as an unsigned binary number, is divisible by 3.
Calculate the angular displacement between the rotor stacks. Determine the frequency of phase currents required to achieve a rotor speed of900r/min.
What degree of matching in emitter area is required for the base-emitter voltages of two bipolar devices with identical collector currents to have a difference of less than 5.0mV. Use VT= 25.85mV.
A cable TV receiver has an input impedance of 200 ohm The cable TV distribution system uses RG-6 cable. This cable has a characteristic impedance of 75 ohm Design an impedance matching stage to maximize the power transfer
What Class of amplifier is this circuit operating in, as determined by the output configuration? Estimate the maximum power this amplifier can deliver into the 50 ohm load and what adjustments would you make to the circuit, in component value choi..
What location on the van top will be the last to dry? What is the water evaporation rate per unit area (kg/s · m2) at the trailing edge of the van top?
Give a brief explanation of the concept of a priority encoder. Using this, what would be the binary output for a 10-input priority encoder when inputs 7 and 5 are activated What is the binary output (active-high) Active-low
Prove that Raoult's Law is as shown below: - Show working and steps for ideal conditions.
Calculate the extraction efficiency (in percentage) of flat - surface LED without any encapsulation (emits directly into the air). The LED is fabricated from material with the refractive index n = 2.3.
Assume the factory described in the previous problem is fed from a line having an impedance of 0.02 + j0.16 O. The voltage at the factory is maintained at 480 V(rms). Find the average power loss in the line before and after the load is added.
Determine the relationship between the steady-state error to a ramp input and the gain K and system parameter b. For what values of K and b can we guarantee that the magnitude of the steady-state error to a ramp input
Determine the capacitance of the capacitors per phase that are to be connected in delta across the terminals of the motor to raise the p.f to unity.
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