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A nickel-coated heater element with a thickness of 15 mm and a thermal conductivity of 50W/m · K is exposed to saturated water at atmospheric pressure. A thermocouple is attached to the back surface, which is well insulated. Measurements at a particular operating condition yield an electrical power dissipation in the heater element of 6.950 x 107 W/m3 and a temperature of To = 266.4°C.
(a) From the foregoing data, calculate the surface temperature, Ts, and the heat flux at the exposed surface.
(b) Using the surface heat flux determined in part (a), estimate the surface temperature by applying an appropriate boiling correlation.
A circuit has a power factor of 86.6% lagging and your multimeter indicate it is operating at 240VAC with acurrent draw of 12.5 A Find Apparent power, real power, reactive power of the circuit. Draw colmplex power triangle
What is frequency sensitivity of the demodulator? What is the value of A_m for which the carrier component is reduced to zero for the second time
A shunt dc motor has RA = 0.1-ohm and VT = 440 V. For an output power of 16.1 hp, nm = 1,213 rpm and IA = 103 A. The field current remains constant. Find the the rotational power loss in hp.
How to determine the suitable size of cable for Electrical Wiring Installation and please with Solved Examples.
A manufacturing plant has a 600V, 60Hz supply and the following loads: Lights: 24kW Electric furnace: 4.8 + j6.4 with a current of 150A Motor loads, 160kW at 0.8 Power Factor, lagging. What is the real power, reactive power, and aparent power
A short distance system is composed of two identical transmission lines with an amplifier between them. A 1 mW signal is transmitted at one end and is received at the other end with an SNR of 22 dB.
It is required to design a noninverting amplifier with a dc gain of10. When a step voltage of 100 mV is applied at the input, it isrequired that the output be within 1% of its final value of 1 V inat most 100 ns. What must the unity gain of the op..
a) At what time does the peak value of the AC signal occure b) What is the frequency,f,of the AC signal c) What is the period,T,of the AC signal d) At what time does the negitve peak value of the AC signal occur
A coax cable has an inducance of 300nH/m and capacitance 53pF/m and carries very high frequency radio waves. Sart with the quantity gamma for transmission line, explain your approximations and find the phase velociy of propagation.
a transconductance amplifier with ri 2 komega gm 40 mav and ro 20komega is fed with a voltage source having a
Design a 3-input CMOS OR-gate using MOSFETs on the CD4007 chip. Make certain that the power dissipation is zero when the output is both logic 1 and logic 0. As an added challenge, design the OR gate using the minimum number of CD4007 chips.
F(a,b,c,d,e) = Σ m(0, 1, 2, 6, 7, 8, 16, 17, 19, 20, 25, 26, 29, 31) + Σ d(3, 5, 18, 27) (a) Find the essential prime implicants of F and indicate the minterm which makes each one essential.
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