Air Density of environment with 76mm Hg pressure and 45 degree temperature?: a. 0.9445 b. 0.9545 c. 0.9369 d. 0.9269

The following data are given for a wind turbine:         Blade length, l = 45 m         Wind speed, U = 12 m/sec         Air density, r = 1.25 kg/m3 Find the following:  a) Total wind power in MW that can be extracted b) Maximum wind turbine power in MW that can be generated c) Actual wind turbine power in MW if the power coefficient is 0.38 d) Blade tip speed in m/s if the rotational speed is 7 rpm e) Tip speed ratio

Estimate the dielectric losses in the solid specimen subjected to an alternating field of 40KV/cm, has an absolute permittivity of 4.445 x10-11 and the loss angle of that solid dielectric material is 0.28647at Oman power frequency. And also the same specimen while subjected to 3 KV/cm DC supply with the resistance value of 10 Mega Ohm, then determine the heat generated in the specimen.

med1.pdf 1. A given material has a resistance of 20 2 a) Does the material have a positive or a negative temperature coefficient? Explain briefly. b) Determine the value of the temperature coefficient, a, at 20°C. c) Assuming the resistance versus temperature function to be linear, determine the expected resistance of the material at 0°C (the freezing point room temperature (20°C) and 25 N at a temperature of 85°C. water) and at 100°C (the boiling point of water). 2. Find the equivalent resistance Rab in the circuits of Figure below. 10 2 60 2 30 2 boT ww ww 202 3. The network of Figure below is the basic biasing arrangement for the field-effect transistor (FET), a device of increasing importance in electronic design. (Biasing simply means the application of de levels to establish a particular set of operating conditions.) Even though you may be unfamiliar with the FET, you can perform the following analysis using only the basic laws introduced in your lectures and the information…

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Q1. In which of the following cases, the Electrostatic Discharge (ESD) is more? Explain how the ESD event taken place in both the cases. a. A person walking across a synthetic carpet on a dry day and generates a potential of 15 kV on his body. b. A person walking across a plain ground surface on a dry day and generates a potential of 100 V on his body.

Q. 26. A specimen is tested for insulation resistance by the loss of charge method. The specimen capacitance is 2.8 nF. It is observed that after charging the voltage falls from 260 V to 160 V in one minute. If the voltmeter used is assumed with infinite resistance, determine the insulator resistance. A. 44.14 GO B. 17.38 GO C. 36.38 GO D. 9.38 GO

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calculate ZL and average Pmax

44% P 8:02 * ZAIN IQ I. med1.pdf 1. A given material has a resistance of 20 2 at room temperature (20°C) and 25 2 at a temperature of 85°C. a) Does the material have a positive or a negative temperature coefficient? Explain briefly. b) Determine the value of the temperature coefficient, a, at 20°C. c) Assuming the resistance versus temperature function to be linear, determine the expected resistance of the material at 0°C (the freezing point of water) and at 100°C (the boiling point of water). 2. Find the equivalent resistance Rab in the circuits of Figure below. a o 102 60 Ω 30 Ω bo ww ww 20 Ω 3. The network of Figure below is the basic biasing arrangement for the field-effect transistor (FET), a device of increasing importance in electronic design. (Biasing simply means the application of de levels to establish a particular set of operating conditions.) Even though you may be unfamiliar with the FET, you can perform the following analysis using only the basic laws introduced in your…