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A shunt-connected 75 𝑘𝑊, 250 𝑉 DC motor has an armature resistance of 45 𝑚Ω and a field resistance of 185 Ω. When operated at 250 𝑉 its no-load speed is 1850 𝑟𝑝𝑚. The motor is operating under load at ...

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Heat Transfer problem
Consider a double-pipe parallel-flow heat exchanger of length L. The inner and outer diameters of the inner tube are Di and Da, respectively, and the inner diameter of the outer tube is Ds. Draw the cross-section of the heat exchanger ...

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PBL title: (Structural Analysis of solar panel support system under loadings as per ASCE criteria) Location of structural system is in Islamabad. Height of the building is 24ft from ground level. Panel will be fitted on the roof. Assume that roof has been designed sufficiently to bear the load of the solar setup. Assume a 10Kw solar system to be installed. Assume any missing data as per standard engineering practice. The roof dimensions are 30×80 ft. The proposed framing is to be fabricated with MS steel sections, the size and dimensions are to be assumed. The proposed framing and dimensions are given below as a reference: – 1 2 Types of supports 3, 4 and joints at 1, 2 to be decided. Slope of beam to be decided. Length of shorter leg is fixed at 3ft 6ft Solution must include at least 1. Decide number of panels, Frame dimensions Support conditions. 2. Calculate and apply wind load as per ASCE. 3. Calculate and apply solar panel load. 4. Decide load of solar panel and apply at suitable locations of the frame as per prevailing engineering practice. 5. Slope of beams 30 35 degree or as per standard, please justify your preferred angle. 6. Analysis one exterior and one interior frame by applying moment distribution method. Key: 1. Wind load to be taken from ASCE. 2. Weight of Solar panel (585W) to be decided as per Manufacturer guidelines (LONGI, JINKO, JA solar, Canadian solar. 3. Perform all calculations by hand. 4. Draw shear force, bending moments and axial force diagrams where required. 5. Use modern tools and software to verify your analysis. 6. Present a comprehensive report and discuss your findings and conclusions. 7. Each student should avoid copying others work to avoid mark deductions. 8. Insert your name and registration number in sheets 3 and 4 and attached with the copy of report. 9. Late submissions will not be accepted.
PBL title: (Structural Analysis of solar panel support system under loadings as per ASCE criteria) Location of structural system is in Islamabad. Height of the building is 24ft from ground level. Panel will be fitted on the roof. Assume that roof has been ...

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A 40° slope is excavated to a depth of 8 m in a deep layer of saturated clay having strength parameters c = 95 kN/m2, Ø= 0, and y = 20 kN/m³. Determine the factor of safety for the trial failure surface shown in Fig. 4. Use scale of 1 cm = 1 m.
A 40° slope is excavated to a depth of 8 m in a deep layer of saturated clay having strength parameters c = 95 kN/m2, Ø= 0, and y = 20 kN/m³. Determine the factor of safety for the trial ...

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Details of a reinforced concrete cantilever retaining wall are shown in Fig. 2, the unit weight of concrete being 27 kN/m³. Due to inadequate drainage, the water table has risen to the level indicated. Above the water table the unit weight of the retained soil is 19 kN/m3, and below the water table the saturated unit weight is 22 kN/m³. Characteristic values of the shear strength parameters are ‘0 and Ø 32°. Compute Magnitude and point of application of lateral earth pressure acting on the wall
Details of a reinforced concrete cantilever retaining wall are shown in Fig. 2, the unit weight of concrete being 27 kN/m³. Due to inadequate drainage, the water table has risen to the level indicated. Above the water table the unit ...

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For an office room of 16′ x 16′, four columns are placed at the four corners. Load carried by each column is 400 kips. Considering the column loads as point loads, assess the vertical stress at the center of room at a depth of 10′ below columns. Use any appropriate method.
For an office room of 16' x 16', four columns are placed at the four corners. Load carried by each column is 400 kips. Considering the column loads as point loads, assess the vertical stress at the center of room at ...

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Surface of a granular soil mass is inclined at 25° to the horizontal. The soil is saturated throughout with a moisture content of 15.8 percent, particle specific gravity of 2.65 and a friction angle of 38°. At the depth of ...

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