Q. The system 2d2y/dt2+4dy/dt+8y=8x, has damping ratio______ a. 0.25 b. 0.1 c. 0.33 d. 0.5 Answer and Explanation Answer is 0.5 The given System is a second order system and is given by 2d2y/dt2+4dy/dt+8y=8x After taking the Laplace Transform we get 2s2Y(s)+4sY(s)+8Y(s)=8X(s) or (2s2+4s+8) Y(s)=8X(s) Y(s)/X(s) =8/(2s2+4s+8) so, the transfer function of the system is…
Technical Posts
Full wave rectifier with 50 Hz input frequency
Q. Full wave rectifier with 50 Hz input frequency has output frequency_________ a. 100 Hz b. 50 Hz. c. 75 Hz d. None of the above Explanation A full-wave rectifier rectifies both cycles of the AC input i.e., it conducts two times during one cycle. The output frequency is Twice/double that of the input frequency….
Apparent power drawn by an A.C.
The apparent power drawn by an A.C. circuit is 10 kVA and active power is 8 kW. The reactive power in the circuit is a. 4 kVAR b. 6 kVAR c. 8 kVAR d. none of these Explanation: Fig. 1 below show the Power Triangle. It shows the relationship B/W apparent power, active and reactive…
Transformer Suppliers in Pakistan
This post is about the top power and distribution transformer manufacturers/suppliers in Pakistan. Many industries works in the power sector of Pakistan but here we will list the top HV rated power transformer manufacturers. For latest Jobs, Scholarships and Interesting Articles visit our Homepage. You can visit our YouTube Channel The World of Engineers for…
ITU graduate fellowships
Welcome to our latest post on top scholarships and fellowships for Pakistani students at Information Technology University. Here we are posting list of top fully funded scholarships and fellowships for Pakistani students by Information Technology University. For international fellowships and scholarships go to our scholarships page. This post is about ITU graduate fellowships. Below is…
Vertical lines on the S-plane are the lines of constant ______________
a. Peak time Tp b. Settling time Ts c. Percent Overshoot c. Rise time Answer Explanation Ans is b) Settling time Ts Solution: As Ts=4/σd where σd is real part of a complex pole. Now as shown in the above Fig. C1 below, on S-plane vertical lines represents constant real part of the imaginary poles…
Power Planning and Monitoring Company Jobs
Power Planning and Monitoring Company on 17 July advertised Jobs in Daily Jang Newspaper, having 7 posts of Assistant Specialist Technical (1 year experience required) and 2 posts of Specialist Planning (3 year experience required). To view all Active latest Jobs Click Here. The Complete details of the posts is given below. Assistant Specialist Technical…
