Thursday, October 29, 2009
(Courtesy of Athar Asaad - Section B)
1. In a gas turbine power plant, gases flow through turbine at 17kg/s and power developed by the turbine is 1400,0000W. Specific enthalpies at inlet and outlet is 1200kJ/kg and 360kJ/kg respectively. Velocity at inlet and outlet is 60m/s and 150m/s respectively. Find heat flow rate (Q dot) and area of inlet pipe (A1). Specific volume of gases at inlet is 0.5m3/kg. Take z1=z2=0.
(Q dot = -119.35kW, A1=0.141m3)
Wednesday, October 28, 2009
Here we go with Network Analysis solutions for Chapterz 4 , 5 and 6 ....
Enjoy and respond if you like..
(Courtesy of Sohaib Shah - Section E)
Tuesday, October 27, 2009
(A public service message respecting Azeem's request)
Monday, October 26, 2009
Course is included upto "Heat Engine". Paper will contain numericals and theory. Numericals include those which Sir Jawad has taught in the class or of similar nature (i.e. their values might be different). Bring steam tables along with you, as they will not be provided to you during the exam.
Electric Machines (only for Sir Arsalan's portion)
The paper will not entirely be of numerical type, rather it may include some theory questions (short questions), labelled diagrams (three dimensional, with proper current and emf directions), derivations and certainly some numerical based questions (sample questions will be available at Star Photocopy). Syllabus includes everything Sir Arsalan has discussed in his lectures, but armature reaction and equations of torque (topic 8.5), taught in the last lecture to some sections, are not included. It will be upto power losses topic.
It will include 70% numerical portion and 30% theory ( from lecture notes...if you've made any! ;) ). You can also consult Bogart's book as a reference. Syllabus doesn't include common collector amplifier and FET amplifier (which was discussed in the last lecture of some sections). So, you've to prepare only upto common base amplifier.
The course is included upto Exercise 2.2. Sir Haroon Babri refused to tell the actual paper pattern, but it may have a flavor similar to Quiz 1.
(A message on behalf of section A's, B's, C's and D's CR)
Sunday, October 25, 2009
1st Mid is on 29th..All the schedule is the same except for Machine's. It's gonna be at the end of all.
Have a look at the datesheet now:
(All the Best ppl !)
Saturday, October 24, 2009
At last, the university is opening on 26th of this October...
Also, on behalf of the CRz of sections A n B, there'll b no MID on this Monday...So folks, stay calm and start prep if u haven't started it yet!
(New datesheet 'll be shared with you later on as it get confirmed..)
Wednesday, October 21, 2009
Tuesday, October 20, 2009
(CRs of Section D and B)
Let's pray to Allah Almighty for the protection of all the citizens of Pakistan and lets repent on our sins and ask for forgiveness to Almighty Allah!
Sunday, October 18, 2009
I mean this is not for sure by now (i.e 19/10/09 (12:26:03 PM)), but it is quite near to department's present psyche....
Timing : 9:00 am
We are a bit Sad...Though , this post seems to be open for everyone....But it's really somethin' particular to someone....
These dayz , it's usually sounded in the 'quiet' atmosphere of section D :
"Sada munda kho lya ne !!"......Confused???So a stranger would be. However , we believe that the intended person will get it at once..'WO' smajh jae ga!
(Commentary on it is stricktly restricted to the ppl who have an idea ov the matter..)
Saturday, October 17, 2009
Thursday, October 15, 2009
Link to a Tutorial
(Password : mechodownload)
Monday, October 12, 2009
They might prove helpful...! (Do tell us, if so...)
Friday, October 9, 2009
'D' rocks......! (B also rocks but only about 69% of what 'D' rocks)
No. of notes of Rs. 10 = 12
No. of notes of Rs. 50 = 4
No. of notes of Rs. 100 = 7
(Take the variable representing the no. of coins to be equal to n, where n can range from 1 to 4. You'll see that it will be 4, because for the other cases, it results in a fractional number of notes, which is absurd....aint it??)
Sunday, October 4, 2009
Thursday, October 1, 2009
Here we go with our 1st Quiz.....Starting from 12th of this October.
Have a look:
Timingz: 12:30 PM (20 minutes each!)
Besta' Luck to All!!
(a) Impulse Turbines (Velocity Based)
These turbines change the direction of flow of a high velocity fluid or gas jet. The resulting impulse spins the turbine and leaves the fluid flow with diminished kinetic energy. There is no pressure change of the fluid or gas in the turbine rotor blades (the moving blades), as in the case of a steam or gas turbine, all the pressure drop takes place in the stationary blades (the nozzles).