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ECNG1012 : Engineering Science and Technology (Semester I- 2024/2025)

ECNG1012 : Engineering Science and Technology (Semester I- 2024/2025)

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Consider

a uniformly heated, isotropic & homogeneous copper rod of length 1 meter. Assume it is heated from room temperature (25

^oC) to 300^oC. Evaluate the magnitude of the thermal stress in MPa.

State your answer to 2 decimal places.

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A certain element has an atomic radius of 0.132 nm, an FCC crystal

structure, and an atomic weight of 64.1 g/mol. Compute

its theoretical density in g/cm³.

Please give your answer to 2 decimal places.

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For the circuit below, in proving that K.C.L is verified, the values for I1, I2, I3 are:

I1 = 0.29 A , I2 = 0.08 A, I3 = 0.21 A

none of the above

I1 = 0.07 mA , I2 = 0.02 mA, I3 = 0.05 mA

I1 = 0.29 mA , I2 = 0.08 mA, I3 = 0.21 mA

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The Superposition Theorem states that in a linear resistive circuit containing several sources, the current or voltage anywhere in the circuit can be obtained by using the source closest to ground as its reference.

The proportionality theorem states that the response in a circuit is proportional to the source acting in the circuit. The proportionality constant K relates the input voltage to the output voltage as Vout= kVin.

True

False

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cir

The circuit above has a load resistor R3 between nodes A and B. This circuit can then be reduced to the Norton's equivalent circuit shown in the figure below. Determine the values of Isc and Rsc in the Norton's equivalent circuit.

nort