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The time t required to test a computer memory unit is directly proportional to the square of the number n of memory cells in the unit. For particular type of unit, n= 6400 for t= 25.0s. Find the instantaneous rate of change t with respect to n for this type of unit for n= 8000.
The Y-Connected synchronous motor whos nameplate is shown in Figure 1 has a per-unit synchronous reactance of 0.9 and a per-unit resistance of 0.02. a.) What is the rated input power of this motor
A 5-volt intelligence amplitude causes the frequency to change to ± 25 kHz. What will be the carrier frequency variation corresponding to an intelligence amplitude of 10 volts.
Solve for x1 and x2 in the system of equations given by x2 -3x1 + 1.9 = 0: x2 + x12 - 1.8 = 0 by Gauss method with an initial guess of x1 = 1 and x2 = 1
A ideal transformer is rated at 4800/480 volt, at 75KVA. it is connected as a step down auto transformer. find the line and load voltages, turns ratio and total apparent, real and reactive power at full load and at 60% rated load at a power factor..
A causal LTI dicrete time system is said to have an overshoot in its step response if the response exhibits an oscillatory behavior with decaying amplitude around a final constant value.
An npn transistor of a type whose P is specified to range from 60 to 300 is connected in a circuit with emitter grounded, collector at +9 V, and a current of 50 pA injected into the base.
determine the equivalent impedance of the transformer referred to the high side (assume the equivalent resistance is negligible). Hint: draw a phasor diagram showing I E V and the impedance drop.
Determine the input current and the load current and voltage. Also, calculate the power absorbed at the load. Use the data from A above, but assume the load is an open circuit. Determine the input current and the load current and voltag..
A 50 cycle ac has a maximum instantaneous value of 42.42A.It crosses the zero axis in a positive direction when time is zero. Determine a)time when current first reaches a value 30a
Analysing an RF splitter and power levels, A splitter is a device that has a single input and several outputs. It is used to send a signal to several different locations
In a 2-pole, three-phase PMAC drive, the torque constant and the voltage constant are 0.5 in MKS units. A constant torque of 5 Nm is developed to bring the system from rest to 5000 rpm in 5 seconds.
The company finds it efficient to periodically replace all the bulbs in the building at the same time. After how many ours should all the bulbs be simultaneously replaced to ensure that no more than 20% of bulbs have failed before they are replace..
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