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Pure resistive of 15 'in 220V-50Hz network, 45º excitation angle

1 phase phase angle controlled AC chopper feeding the load,

a) Draw the circuit diagram exactly, check the current and voltage directions

show on it.

b) Draw the basic waveforms of the circuit with its values.

c) Calculate the basic parameters according to the drawn waveforms.


AC chopper with 1-phase on-off control, which feeds a pure resistive load of 5, in 220V-50Hz network, with 10 Hz- 50% effective period.

a) Draw the circuit diagram exactly, check the current and voltage directions

show on it.

b) Draw the basic waveforms of the circuit with its values.

c) Calculate the basic parameters according to the drawn waveforms.


A bowling ball has a mass of 6 kg, a moment of inertia of 1,6 10-2 kg.m2, and a radius of 0,2 m. If it rolls down the lane without slipping at a linear speed 8 m/s, what is its total energy?


A closed system has 150 KJ of work supplied when the initial volume is 0.6m^3 and pressure of the system changes in the relation p = 8-4V, where V is in m^3 and p is in bar. Compute the final pressure and volume of the system. Express your answer in Pa and m^3


A tank initially contains 60 gal of brine in which there is dissolved 8 lb of salt. Brine containing 2 lb of dissolved salt per gallon flows into the tank at the rate of 5 gal/min. The mixture is kept uniform by stirring, and the stirred mixture simultaneously flows out at the slower rate of 3 gal/min. How much salt is in the tank at any time?


Choose any real time structural or machine component, part, and member subjected to loading

that you are familiar with (e.g. a beam). The chosen problem should be complex enough that you can

write something about it, but not so complex that you get bogged in a lot of details.

Thorough analysis is expected in terms of:

a. Problem statement with design limitations, requirements with assumptions.

b. Complete analytical calculations with proper description

c. Proper drawing of the component, part or member with dimensions and application of loads.

d. Free body diagram, shear force diagram, and bending moment diagram wherever necessary.

e. Normal and shear stress distributions wherever applicable.

f. Factor of Safety.


Describe the uses of Vector Calculus in real life and in Engineering field (any five)


A rectangular lot was measured using a 50 m metallic tape which was 1.02 cm too short. The recorded distances were 170.55 m long by 137.05 m wide. What is the error in area introduced due to the erroneous length of tape?


From the measured values shown, determine if the measurements are within the required precision. Show all computations. Allowable precision is 1/5000.Determine the most probable value of the interior angles.If the measured distance is 220.85


From the measured values shown, determine if the measurements are within the required precision. Show all computations. Allowable precision is 1/5000.Determine the most probable value of the interior angles.If the measured distance are 220.87,220.90,220.93,220.81 and 220.89.


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