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Enlist major subsystems of coal based thermal power plants and draw the air and gas circuit for modern thermal power plant.
A gas turbine plant operates on Brayton cycle with air entering the compressor at 1 bar and 27°C. The pressure ratio is 6 and the maximum temperature is 800°C. The compressor and turbine efficiencies are 82% and 87% respectively. Mass flow rate of air is 2 kg/s. Determine the thermal efficiency and power output of the plant. Take Cp = 1 kJ/kg K and γ = 1.4 for air and gases.
Steam at 20 bar and 300°C expands through a convergent-divergent nozzle to 2 bar with a mass flow rate of 0.4 kg/s. The nozzle efficiency is 0.92 and initial velocity is negligible. Assuming critical pressure ratio as 0.546, determine the throat area, exit area, and exit velocity of steam.
In an open cycle gas turbine plant, air is compressed from 1 bar, 300 K to 5 bar with compressor efficiency of 80%. The turbine inlet temperature is 900 K with turbine efficiency of 85%. If the mass flow rate is 3 kg/s, calculate the net power output and thermal efficiency. Assume Cp = 1 kJ/kg K and γ = 1.4 for air and gases
Draw neat sketches of the profiles of steam pressure and steam velocity during velocity compounding of steam turbines
Steam leaves the nozzle of a De Laval turbine at 1000 m/s with nozzle angle 20°. The mean blade speed is 300 m/s, and blade inlet and outlet angles are equal. Mass flow rate is 800 kg/hr. Assuming blade velocity coefficient as 0.85, determine:
Explain the layout, construction, and working of a Pressurized Water Reactor (PWR) with a neat sketch
Enlist at-least 6 factors that are considered for the site selection of a nuclear power plant
Discuss the role of moderator and control rods in the nuclear power plant. Also discuss the effects if any of these two fails in its operation.
A 50 MW power plant has an annual peak load of 40 MW and average load factor of 0.55. It supplies loads with maximum demands: Domestic 15 MW, Commercial 20 MW, Industrial 25 MW. The overall diversity factor is 1.3. Calculate:
Explain the construction and working of a solar photovoltaic (SPV) power system with a neat sketch. Discuss its merits and demerits.
BE Mechanical
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Official Gujarat Technological University (GTU) examination paper for Power Plant Engineering (Summer 2026, B.E. · Mechanical Engineering, Sem 7). Features complete 70-mark regular & remedial examination pattern, official marking distribution across all 5 questions, and direct 1-click official PDF download.
Transcribed for student exam preparation from Gujarat Technological University official examination archives. Questions, syllabus guidelines, and curriculum marking schemes remain the intellectual property of Gujarat Technological University.
3171910 Power Plant Engineering
Official GTU PDF · Summer 2026
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