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What are the factors that distinguish electromagnets from permanent magnets?
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The y form of iron is known as: a) ferrite b) cementite c) perlite d) austenite
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Apressure vessel with an r/t 20 cannot be treated as thin walled vessel. a)-trune b)- false
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Two slings are used to lift a girder of length l and uniform weight per unit length. what is the best position for the slings if the bending moment due to the weight of the girder is to be kept to a minimum?
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Engineering, 06.07.2019 04:10
Aspherical thermocouple measurement errors a spherical thermocouple made of constantin transfer coefficient between the gas and the thermocouple is h used to measure the temperature of a gas. the heat 400 w/m2 k. calculate the maximum diameter d of the thermocouple if the thermocouple's measurement error should be w 23 within 5% of the initial temperature difference in 5 seconds. for constantin, k 8920 kg/m3, and c 410 j/kg. k.
Answers: 3
What are the factors that distinguish electromagnets from permanent magnets?...
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