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A wattmeter connected to a 240-volt 60 Hz series RL circuitindicates a reading of 691 watts. A clamp-on ammeter used to measure current flow indicates a current of 4.8 A. Determine the:A) True power
B) Apparent power
C) Reactive power
D) Circuit power factor
A dc power distribution cable has two #6 copper wires. The copper wire table in the textbook lists each wire as having resistance of Ro=.4028 ohms per thousand feet at temperature of 25C. The temperature coefficient of copper is alpha=.004 per C.
A temperature sensor has a static transfer function of 0.15mV/degrees C and a time constant of 3.3 s. If a step change of 22 degress C to 50 degress C is applied at t = 0, find the output voltages at 0.5s, 2.0s, 3.3 s, and 9s.
Design a uniform ordinary end-fire array to have a half power bandwidth (HPBW) no greater than 100°, namely : i- find the number of elements N, take the inter-element spacing d=λ/8. ii- find the relative side lobe level.
Given an object with a mass of 55 lbm, who starts at rest but experiences a constant horiz. force due to resultant force applied for 10 seconds. The work of the resultant force is 7,782 lbf*ft.
noncausal, linear, and time-invariant. Determine the impulse response for the system and verify that an LTI system defined by the impulse response you determined satisfies the difference equation.
The silicon substrate is N-type (doping level ND = 7x10^16cm-3), and the gate is heavily doped N+-type polysilicon. Assuming zero oxide charge density, determine the density of mobile charge at the semiconductor surface, if the voltage applied bet..
In a unity feedback system, the forward path has a transfer function of the form G(s) = k/(1+s/ωp), and the feedback path has a gain of kfp which is less than unity. Calculate the bandwidth of the closed-loop transfer function.
A 6600V/230V, 50Hz single phase core type transformer has a core section 25cmX25cm. Calculate the approximate number of primary and secondary turns if the flux density in the core should not exceed 1.1Wb/m2.
Phosphorus atoms, at a concentration of 5*10^16 cm^-3, are added to a pure sample of intrinsic silicon. Assume the phosphorus atoms are distributed homogeneously throughout the silicon sample. What is the fraction by weight of phosphorus
A circuit has a meter shunted by a parallel resistance (rs). With a current of 200 A. The meter can read a max of 1mA and has a residtance of 0.1 ohm. The shunt resistance is 0.0000005000025.
Draw as circuit diagram of the basic non-inverting amplifier configuration. Give an expression for the closed-loop voltage gainof the circuit in terms of the resistances, assuming an ideal co amp
A radially dependent surface charge is distributed on an infinite flat sheet in the x-y plane and is characterized in cylindrical coordinates by surface density ps = p0/p, where p0 is a constant. Determine the electric field strength, E, everywher..
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