HPSC HCS Preliminary Exam Electrical Engineering Question Paper : Haryana Public Service Commission

Name of the Organization : Haryana Public Service Commission
Name of the Exam : HCS (Ex.Br.) Preliminary Exam
Subject : Electrical Engineering
Document Type : Previous Question Paper
Year : 2014

Website : http://hpsc.gov.in/en-us/
Download Sample/Model Question Paper : https://www.pdfquestion.in/uploads/11230-Electrical.pdf

HCS Preliminary Exam Electrical Engineering Question Paper :

Time Allowed : Two hours
Code : 08
Max.marks : 100
Instruction :
1. Use only BLUE Ball Point Pen.
2. In case of any defect – Misprint, Missing Question/s Get the booklet changed.
3. No complaint shall be entertained after the examination.

Related : HPSC HCS Preliminary Exam Civil Engineering Question Paper : www.pdfquestion.in/11219.html

4. Before you mark the answer, read the instruction on the OMR Sheet (Answer Sheet) also before attempting the questions and fill the particulars in the ANSWER SHEET carefully and correctly.
5. There are FOUR options to each question. Darken only one to which you think is the right answer. There will be no Negative Marking.

6. Answer Sheets will be collected after the completion of examination and no candidate shall be allowed to leave the examination hall earlier.
7. The candidates are to ensure that the Answer Sheet is handed over to the room invigilator only.

8. Rough work, rt any, can be done on space provided at the end of the Question Booklet itself. No extra sheet will be provided in any circumstances.
9. Write the BOOKLET SERIES in the space provided in the answer sheet, by darkening the corresponding circles.
10. Regarding incorrect questions or answers etc. Candidates kindly see NOTE at the last page of the Booklet.

l. A polynomial f(x) = a4x4=a3x3+a2x2+ax-a0 with all coefficients positive has
(A) no real roots
(B) no negative real root
(C) odd number of real roots
(D) at least one positive and onc negative real root

2. The steady-state error of a feedback control system with an acceleration input becomes finite in a
(Af type 0 system.
(B) type I system.
(C) type 2 system.
(D) type 3 system.

3. The impulse response of a LTI system is a unit step function, then the correspond-rding transfer function is
(A) l/s
(B) l/s2
(c) I
(D) s

3. If the transfer function of a first-order system is G(s)= 10/1+1.25 then the time constant of the system is
(A) l0
(B) 1/10
(c) 2
(D) 1/2

4. A good control system has all the following features except
(A) good stability
(B) slow response
(C) good accuracy
(D) sufficient power handling capacity

5. Which of the following is the best method for determining the stability and transient response?
(A) Root locus
(B) Bode Plot
(C) Nyquist plot
(D) None of the above

6. Addition of zeros in transfer function causes which of the following ?
(A) Lead-compensation
(B) Lag-compensation
(C) Lead-lag compensation
(D) None of the above

7. The control system design specification for a chemical process is described as short settling time, improved damping and zero steady state error. What control do we choose?
(A) P
(B) PI
(c) ID
(D) PID

8. When a system’s frequency response crosses the -1 point
(A) the Gain Margin is I dB
(B) the Gain Margin is co
(C) the Phase Margin is zero
(D) the Phase Margin is 180o

9. Maxwell’s equations involve_.
(A) Charge density
(B) Current density
(C) Magnetic intensity
(D) All of these

10. Which of the following is a lo’*’-gain antenna?
(A) Dish antenna on a space craft
(B) Wi-Fi antenna
(C) Both (A) and (B)
(D) None of the above

11. Gold and silver are
(A) dielectric materials
(B) low resistivity conducting materials
(C) magnetic materials
(D) insulating materials

12. Hall effect may be used for which of the following
(A) determining whether the semiconductor is p or n type
(B) determining the carrier concentration
(C) calculating the mobility
(D) All the above

13. The property due to rvhich the resistance of some metal or compound vanishes under certain conditions is knolvn as
(A) Semi conductivity.
(B) Magnetostriction.
(C) Curie point.
(D) Super conductivity.

14. A 32 to I multiplexer has the following features.
(A) 32 inputs, one output and 5 control signals
(B) 32 outputs, one input and 5 control signals
(C) 5 inputs, one control signal and 32 outputs
(D) 5 inputs 32 control signals and one output

15. How many compactors would a l2-bit flash ADC require?
(A) 4095
(B) 3095
(c) 4000
(D) 2512