LCC-16

Center Karachi
Corps EME (EE)
Status Clear
Verbal was mostly from the questions that you provided
Acadamic
1)Unit of magnetic flux density:
Tesla
2) transformer winding and core related ( read the following):
Transformer winding materials are aluminum and copper which are the most frequently used conductors in transformer windings. The mechanical strength and conductivity are high for copper whereas aluminum materials are less cost and lightweight as compared to copper.
The core of a transformer is made of soft iron. Transformers are used in various fields like power generation grid, distribution sector, transmission, and electric energy consumption.
The eddy current loss is minimised by using the thin core of lamination. The silicon steel material is used for minimising the hysteresis loss.
3)The Zener Diode is used in its “reverse bias”. Current starts to flow through the diode to limit this increase in voltage. Therefore the Zener diode will drain the current through it which is called a regulator.
4)The second law of thermodynamics states that the total entropy of a system either increases or remains constant in any spontaneous process; it never decreases.
5) when gas is compressed through a pump what doesn’t change:
(Options: volume, pressure, heat exchage, temperature)
6)on increasing speed , does friction increase or decrease?

8)what has an affect on charge buildup in capacitor?
A) insulating material between plates
B)area of plates
C) distance between plates
D) voltage applied
E)all of the above
7)can we fly a helicopter in vaccume (yes or no)

A few questions that I was able to remember