HPCL Officer Trainee Instrumentation Exam Question Paper

Will you please provide the HPCL Officer Trainee Instrumentation Exam Question Paper?

[Arun Vats]

Here is the list of few questions of HPCL Officer Trainee Instrumentation Exam which you are looking for .

1) A farmer used 1034 acres of land for growing rice, wheat and corn in the ratio of 5:2:4 respectively. How many acres
were used for growing corn?
A) 188 acres B) 258 acres C) 376 acres D) 470 acres

2) How many times should the keys of a keyboard be pressed in order to type the first 300 counting numbers? (i.e. to
type 1, 2, 3 ... 300)
A) 362 B) 1448 C) 1504 D) 792

3) The more she learnt _______ the American Civil War, the more fascinated she became.
A) About B) From C) Off D) With

4) The effect of atmospheric noise is most significant in which of the following ranges?
A) Below 30MHz B) From 30MHz to 300MHz
C) From 300MHz to 3000 MHz D) Above 3000 MHz

5) Unity feedback closed loop second order system has a transfer function 81/(s2+0.6s+9) and is excited by a step input of 10 units. What is the steady state error of the output?
A) 10 B) 0 C) 1 D) 0.1

6) Consider the analog signal xa(t)=3cos50ðt+10sin300ðt-cos100ðt. What is the value of Fn?
A) Fn=300Hz B) Fn=400Hz C) Fn=100Hz D) Fn=200Hz

Dear sir, I have urgent need of the question paper of HPCL Officer Trainee Instrumentation Exam. please give it to me?

[Pathak]

As per your need I am giving you sample paper for the Hindustan Petroleum Corporation Limited (HPCL) officer trainee question paper.

1. The unit of magnetic flux density is

(A) gauss
(B) tesla
(C) bohr
(D) weber/sec
Ans: (B)

2. The equation of continuity defines the relation between

(A) electric field and magnetic field
(B) electric field and charge density
(C) flux density and charge density
(D) current density and charge density
Ans: (D)


3. The current in a coil changes from 5A to 1A in 0.4 second. The induced voltage is 40 V. The self inductance in henry is

(A) 1
(B) 2
(C) 4
(D) 10
Ans: (C)


4. The maximum power will be transferred from a voltage source to a load when

(A) the source impedance is half that of the load impedance
(B) the source impedance is equal to that of the load impedance
(C) the source impedance is twice that of the load impedance
(D) both source and load impedances must be zero

Ans: (B)



5. The total number of branches in a network is equal to b. The graph of the network has n number of branches. The minimum number of line currents is

(A) b+n
(B) b
(C) b-n
(D) n
Ans: (C)


6. In a travelling electromagnetic wave, E and H vector fields are

(A) perpendicular in space .
(B) parallel in space.
(C) E is in the direction of wave travel.
(D) H is in the direction of wave travel.
Ans: C

7. A wave is incident normally on a good conductor. If the frequency of a plane electromagnetic wave increases four times, the skin depth, will

(A) increase by a factor of 2.
(B) decrease by a factor of 4.
(C) remain the same.
(D) decrease by a factor of 2.
Ans: D

8. A hollow rectangular waveguide acts as a

(A) High pass filter
(B) Low pass filter
(C) Band pass filter
(D) Low frequency radiator
Ans: A

9. Divergence theorem is applicable for

(A) static field only
(B) time varying fields only
(C) both static and time varying fields
(D) electric fields only
Ans: C


10. For a rectangular wave guide, 2.5cm x 1.2cm, dominant cut off wavelength is

(A) 5 cm
(B) 2.5 cm
(C) 2.4 cm
(D) 3.7 cm
Ans: A

11. When a steady current is passed through a ballistic galvanometer, then the deflection will be

(A) maximum
(B) zero
(C) twice the normal value as it depends on Hibbert magnetic standard
(D) None of the above

Ans: (B)

12. The measurement of frequency can be carried out with

(A) Owen’s bridge
(B) Wien’s bridge
(C) Maxwell’s inductance-capacitance bridge
(D) Schering’s bridge
Ans: (B)

13. The following material is not used for making a piezoelectric transducer

(A) Rochelle salt
(B) Barium titanate
(C) Chlorium sulphide
(D) Quartz
Ans: (C)

14The velocity factor of a transmission line

(A) is governed by the relative permittivity of the dielectric.
(B) is governed by the skin effect.
(C) is governed by the temperature.
(D) All of the above.

Ans: A

15. By using feedback in control systems, the sensitivity to parameter variation is improved.This is achieved at the cost of

(A) stability
(B) loss of system gain
(C) transient response
(D) reliability
Ans: (B)


16. The phase-lead compensation is used to

(A) increase rise time and decrease overshoot.
(B) decrease both rise time and overshoot
(C) increase both rise time and overshoot
(D) decrease rise time and increase overshoot
Ans: (B)

17. In position control systems, the device used for providing rate feedback is called

(A) potentiometer
(B) synchro
(C) tachogenerator
(D) servomotor
Ans: (C)

18. Given a badly underdamped control system, the type of cascade compensator to be used to improve its damping is

(A) phase-lead
(B) phase-lag
(C) phase-lag-lead
(D) notch filter

Ans: (B)

19. Analog data acquisition systems are used when

(A) wide bandwidth and low accuracy are required/sufficient
(B) narrow bandwidth and low accuracy are required/sufficient
(C) wide bandwidth and high accuracy are required
(D) narrow bandwidth and high accuracy are required

Ans: (A)

20. In a transmission line terminated by characteristic impedance, Zo

(A) There is no reflection of the incident wave.
(B) The reflection is maximum due to termination.
(C) There are a large number of maximum and minimum on the line.
(D) The incident current is zero for any applied signal.
Ans: A