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1) Is the experimentally determined rate equition depends on the type of reactor used for experiments? (Yes / No)
A battery having a voltage source of cos t is connected to a series circuit on which the
inductance is 0.75 henry and the resistance is 15 ohms. Determine the current i at any time t if the
initial current is zero.
A large tank initially contains 220 gal of brine where there is dissolved 35lb of salt. Starting
at time t = 0, a brine containing 3lb of dissolved salt per gallon flows into the tank at the rate of
6gal/min is kept uniform by stirring and the well-stirred mixture simultaneously flows out of the
tank at a slower rate of 3gal/min. How much salt is in the tank at the end of 20 min?
reverse bending stress of 300 N/mm2 is acting on 55 mm diameter steel. the ultimate strenth of steel is 590 N/mm2. Consider the factors ka= 0.45,Kb=0.85,Kc=0.89 and remaining factor are 1. Calculate the life of the bar for the reliability of 90%.
According to the data listed at the Philippine Statistics Authority, the Philippine total
population reached 4 billion persons in year 2020 and was then increasing at the rate of 250
thousand persons each day. Assuming that natural population growth at this rate continues, what
will be the population at year 2060?
A pipe, through which water is flowing, is having diameters 20 cm and 10 cm at the cross-section 1and 2 respectively. The velocity of water at section 1 is given 4.0 m/sec. Find the velocity head at section 1 and 2 and also rate of discharge.
. Two bodies A and B in figure are separated by a spring. Their motion down the incline is resisted by a force P = 800 N . The coefficient of kinetic friction is 0.30 under A and 0.10 under under B. a.) compute the acceleration of block A b.) Compute the acceleration of block B c.) Determine the force in the spring.
The total charge entering a terminal is q=(10-10e-2t) mC. Calculate current at t=0.5 s
Air flows steadily at the rate of 0.4 kg/s through an air compressor,
entering at 6 m/s with a pressure of 1 bar and a specific volume of
0.85 m3/kg, and leaving at 4.5 m/s with a pressure of 6.9 bar and a
specific volume of 0.16 m3/kg. The internal energy of air leaving is 88
kJ/kg greater than that of the air entering. Cooling water in a jacket
surrounding the cylinder absorbs heat from the air at the rate of 59
kJ/s. Calculate the power required to drive the compressor and the
inlet and outlet pipe cross-sectional areas.
A turbine operating under steady flow conditions receives steam at the
following state : pressure 13.8 bar ; specific volume 0.143 m3/kg ;
internal energy 2590 kJ/kg ; velocity 30 m/s. The state of the steam
leaving the turbine is : pressure 0.35 bar ; specific volume 4.37 m3/kg
; internal energy 2360
kJ/kg ; velocity 90 m/s. Heat is lost to the surroundings at the rate of
0.25 kJ/s. If the rate of steam flow is 0.38 kg/s, what is the power
developed by the turbine ?
