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Application: Homopolar generator. A disk of radius 100 mm rotates in a uniform sinusoidal magnetic field at 6000 rpm as shown in Figure 10.45. The frequency of the ac field is 400 Hz and its amplitude is 0.1 T. A wire is connected to the center of the disk and one is sliding on its edge, making good contact. What is the voltage (emf) between points A and B?
Find the per-unit voltage regulation when the transformer is supplying full load at 110 V and 0.9 lagging power factor.
Current transformer with air core. Calculate the induced voltage in an air-filled, uniformly wound toroidal coil of n turns and cross sectional area as shown in Figure 10.51. The central wire is very long and carries a current 1(t) = I0 sin ωt.
How will the mole fractions of benzene and toluene in the liquid change with time (increase, decrease, or remain constant)? Explain your answer.
Develop the designed circuit using breadboard in the laboratory. Available thermal sensor can be used in the circuit. Discuss the effect of resistors on calibration of the sensor with specific emphasis on the sensitivity of the instrument.
Explain in detail the working of the instrument. Description should include neat diagram, principle of working and the source of literature.
Set out your design on a data sheet and make a rough sketch of the heat exchanger.The physical properties of ethanol can be readily found in the literature
If one of the machines has its field excitation adjusted such that it delivers 125 A lagging current, determine the armature current, power factor, excitation voltage, and power angle of each machine.
Risk Analysis and Management: Fragility versus Loads and Fire Explosion Safety Issues, 1. A propane tank is located 100 m away from the nearest buildings. The fragility to explosion can be expressed by
Ammonia gas is compressed from 294.15 K (21°C) and 200 kPa to 1000 kPa in an adiabatic compressor with an efficiency of 0.82. Estimate the final temperature, the work required, and the entropy change of the ammonia.
Suppose that for mass transfer of species A from a fluid flowing over a flat plate the Schmidt number is much less than one (Sc
It is 53.66% C and 4.09% H by mass. A titration required 18.02 mL of 0.0406 MNaOH to neutralize 0.3602 g carminic acid. Assuming that there is only one acidic hydrogen per molecule, what is the molecular formula of carminic acid?
1. Apply the query tuning on following query and explain why your modification is more efficient? SELECT S_name, S_Phone, S_Age FROM STUDEN
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