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a) Air enters the compressor of a gas turbine at 100 kPa and 25°C. For a pressure ratio of 5 and a maximum temperature of 850°C determine the back work ratio and the thermal efficiency using the Brayton cycle.
Solve ∫0^t y''(τ)y'(t-τ)dτ=y(t),y(0)=y'(0)=20
4. In bridge widening projects, the method of stitching is normally employed for connecting existing deck to the new deck. What are the problems associated with this method in terms of shrinkage of concrete?
4. In bridge widening projects, the method of stitching is normally employed for connecting existing deck to the new deck. What are the problems associated with this method in terms of shrinkage of concrete?
1. Under what situation shall engineers use jacking at one end only and from both ends in prestressing work?
a crusher and a crusher are connected to the same electric drive power 2700 kg / h of the material pass successively through the crusher and then the crusher. Sieve particle size analysis of feed, crusher product and mill product respectively indicated specific areas of 2.9, 103 and 865 m2 / kg. Calculate the horsepower required to operate the crusher-crusher assembly, if the crusher's energy efficiency is 20% and the crusher's energy efficiency is 25%. The Rittinger's number for material is 77.4 m2 / kJ.Q3. Radiation falls on a semiconductor specimen which is uniformly illuminated, and a steady-state is reached. At t = 0 the light is turned off. Derive and sketch the minority-carrier concentration as a function of time for t > 0.
Q1.Draw and explain CE configuration with the help of its input and output characteristics. Mention the different region of operation of CB configuration in the output characteristic.
Q2. 2. A 220 V, 50 Hz ac voltage is applied to primary side of 10:1 stepdown transformer, which is used in bridge rectifier having load resistance of 1 KΩ. Calculate (i) peak, average & RMS value of load current (ii) dc output voltage (iii) dc output power (iv) PIV of each diode (v) efficiency (vi) output frequency. (Assume diodes to be ideal diode)
