Related Questions

In a newly developed innovative idea brought up by CSIR in India, gas turbine exhaust gas are being utilized to convert feedwater into steam. Certain data of the experiment are as follows: mass flow rate of exhaust gas = 40 kg/hr, enthalpy of exhaust gas at the time of their exit from gas turbine is 600 kJ/kg, steam turbine output as measured by brake dynamometer = 60 hp-sec, thermal efficiency of steam power plant is 0.25, efficiency of exhaust gas in converting feedwater into steam is taken as 50%. Find the enthalpy of exhaust gas remaining after they generate steam from feedwater?
The pressure in cylinder is ____ the atmospheric value during exhaust stroke and ____ it during intake stroke.
If d=depth of cut in mm, f=feed in mm/stroke, n=stroke/min, l=length of stroke in mm, m= ratio of return stroke time to cutting stroke time, then find the formula for metal removal rate.
In a four-stroke cycle engine, the four processes in a cycle namely suction, compression, expansion and exhaust are completed in . . . . . . . . revolutions of crankshaft.
In a two-stroke cycle engine, the four processes in a cycle namely suction, compression, expansion and exhaust are completed in . . . . . . . . revolutions of crankshaft.
Oxides of nitrogen in the engines exhaust can be reduced by the following methods:
1. Decrease in compression ratio
2. Exhaust gas recirculation
3. Use of 5% lean mixture
4. Use of oxidation catalysts in exhaust manifold.
The correct methods are
Two stroke engines are __________ than four stroke engines for the same power output and speed.
In case of two stroke engines because of scavenging, burnt gases remain in the clearance space as in case of four stroke engines.
The intake and exhaust processes are not considered in the p-V diagram of Otto cycle.
Directions : Following question consists of a statement followed by three arguments I, II and III . You have to decide which of the arguments is a STRONG arguments and which is a WEAK Argument.

Statement : Should coal engines be replaced by electric engines in trains?

Arguments :
I. Yes. Coal engines cause a lot of pollution.
II. Yes. Electric engines are good on performance, easy to operate and low on maintenance.
III. No. India does not produce enough electricity to fulfil its domestic needs also.