EKT 1 2015 Question Paper Electrical And Electronics Stream

EKT 1 2015  was recently conducted along with AFCAT 1 2015 on 22/2/2015. EKT or Engineering Knowledge Test is conducted to select candidates for the technical branch of the Indian Air force. Only B-tech student in final year and later can attempt this exam. There are three different streams of paper in EKT, Electrical and Electronic stream, Computer Science stream and Mechanical Stream.

EKT 1 2015 Electronic and Electrical question paper was same for both EEE and ECE students.

EKT 1 2015 question paper of Electrical and Electronics stream consisted of a total of 50 questions, with each question carrying 3 marks and 1 negative mark for each wrong attempt. EKT 1 2015 Electrical and Electronics syllabus was vast but the questions asked in the EKT exam were very basic on nature and very few numerical type were asked. Cut off marks for EKT 2014 2 was only 45 marks out of 150 marks, cut off marks for EKT 1 2015 electrical and Electronics stream is expected to be between 40 and 60 marks this time.

Complete EKT 1 2015 question paper can be downloaded from the below given pdf link.

EKT 1 2015 Question Paper of Electrical And Electronics Stream

ENGINEERING KNOWLEDGE TEST 2015 1 Questions: EKT ELECTRICAL AND ELECTRONICS STREAM

Total No. of Questions 50, Each Question is of three marks. One mark will be deducted for every wrong answer.

Ql. If x=a(cos t + t sin t), y=a(sin t – t cos t). The value of dy/dx is
(a) cos t
(b) sin t
(c) tan t
(d) sec2 t

Q2. The area of three faces of a cuboid are in the ratio 2:3:4 and its volume is 9000 cm3. The length of the shortest edge is
(a) 15 cm
(b) 30 cm
(c) 20 cm
(d) 60 cm

Q3. ∫▒dx/xlogx  is equal to
(a) log x+x+c
(b) log(logx)+c
(c) xlogx+c
(d) (log x )/x+C

Q4. Tickets numbered 1 to 20 are mixed up and then a ticket is drawn at random. What is the probability that the ticket drawn has a number which is a multiple of 3 or 5?
(a) 8/2
(b) 9/20
(c) 8/15
(d) 2/20

 Q5. The projection of a vector on another vector is
(a) Scalar
(b) Vector
(c) neither vector nor scalar
(d) either scalar or vector

Q6. In MKS system, we measure
(a) mass in kilogram
(b) distance in meter
(c) time in second
(d) all of these

 Q7. When the separation between two charges is made four times, the force between them
(a) increases four times
(b) decreases four times
(c) increases sixteen times
(d) decreases sixteen times

 Q8. When a conductor cuts magnetic flux, an emf is induced in the conductor. This is known as
(a) Joule’s law
(b) Faraday’s law
(c) Coulomb’s law
(d) Ampere’s law

09. X-rays are used for the study of crystal structure because
(a) X-rays are completely absorbed by the crystal
(b) the wavelength of X-ray is of the same order of magnitude in the inter-atomic spacing in crystals
(c) the wavelength of X-rays is very small in comparison with the inter-atomic spacing in crystals
(d) the crystals are completely transparent to X-rays

Q10. A radioactive isotope has a half-life of 10 days. If today there are 125 g of it left, what was its original weight 40 days earlier
(a) 600 g
(b) 1000 g
(c) 1250 g
(d) 2000 g

Q11. Angles project true size only when the plane containing the angle and plane of projection are
(a) Aligned
(b) Adjacent
(c) Perpendicular
(d) Parallel

Q12. Tesla is a measure of
(a) magnetic flux density
(b) electric flux density
(c) magnetic potential
(d) electric potential

Q13. Admittance is reciprocal of
(a) susceptance
(b) impedance
(c) reactance
(d) conductance

Q14_____is an active filter
(a) RC filter
(b) notch filter
(c) Butterworth filter
(d) band pass filter

Q15. For transmission line load matching over a range of frequencies, it is best to use a
(a) Balun
(b) broadband directional coupler
(c) double stub
(d) single stub

Q16 Emitter follower is used for
(a) reducing the gain
(b) increasing the distortion
(c) impedance matching
(d) none of these

Q17. Binary equivalent of (45)10 is
(a) (11101)2
(b) (11110)2
(c) (101101)2
(d) (110101)2

Q18. In Computer memory size K indicates Kilo, which is equal to
(a) 1000
(b) 1024
(c) 100
(d) 10000

Q19. An astable multivibrator has
(a) no stable state
(b) one stable state
(c) three stable states
(d) two stable states

Q20. An ideal Op Amp has .
(a) infinite input and output impedance
(b) very low input and output impedance
(c) low input impedance and very high output impedance
(d) infinite input impedance and zero output impedance

Q21. An instruction used to set the carry flag in a computer can be classified as a
(a) data transfer instruction
(b) arithmetic instruction
(c) logical instruction
(d) program control instruction

Q22. An FET is a
(a) bipolar semiconductor device
(b) unipolar semiconductor device
(c) non semiconductor device
(d) both (a) and (c)

Q23. For Gunn diodes, semiconductor material preferred is
(a) Silicon
(b) Germanium
(c) Gallium Arsenide
(d) all of these

Q24. In a JFET drain current is maximum when VGS is
(a) zero
(b) negative
(c) positive
(d) equal to Vp

Q25. The output of Laser is
(a) Infrared
(b) polarised
(c) narrow beam
(d) coherent

Q26. As compared to a closed loop system an open loop system is
(a) more stable as well as more accurate
(b) less stable as well as less accurate
(c) more stable but less accurate
(d) less stable but more accurate

Q27. Transfer function of a system is used to calculate
(a) the steady state gain
(b) the time constant
(c) the order of the system
(d) the output for a given input

Q28. In a closed loop control system
(a) control action depends upon the output and also on the input command
(b) output signal is fed back to be compared with the reference signal
(c) the accuracy is better than in the open loop system
(d) all of the above

Q29. The difference of the reference input and the actual output signal is called
(a) error signal
(b) controlling signal
(c) actuating signal
(d) transfer function

Q30. If the transfer function of a system is 1/(Ts+1), the steady state error to unit step input is
(a) T
(b) zero
(c) infinite
(d) none of these

Q31.  In a PID controller, the values of proportional, integral and derivative are dependent on
(a) future, past and present errors respectively
(b) present, past and future errors respectively
(c) past, present and future errors respectively
(d) present, future and past errors respectively

Q32. The inverse Laplace transform of 2/(s+1) is
(a) 2(t+1)
(b) 2e-t
(c) 2et
(d) e-2t

Q33. The signal is extended from 96KHz to 10OKHz, so the minimum sampling frequency required is
(a) 8 KHz
(b) 200 KHz
(c) 4 KHz
(d) 100 KHz

Q34. A differentiation circuit has a
(a) very high time constant
(b) very low time constant
(c) infinite time constant
(d) zero time constant

Q35. Ideally Voltage Standing Wave Ratio (VSWR) should be
(a) as large as possible
(b) as small as possible
(c) as close to unity as possible
(d) infinity

Q36. Following is/are a property/properties of quantization
(a) it is an nonlinear process
(b) it is an irreversible process
(c) it maps a larger set of input values to a smaller set
(d) all of these

Q37. Most commonly used filter in SSB generation are
(a) mechanical filters
(b) RC filters
(c) LC filters
(d) low pass filters

Q38. If the antenna diameter in a radar system is increased by a factor of 4, the maximum range will be increased by a factor of
(a) 2
(b) 4
(c) 8
(d) 16

Q39. Following type of multiplexing cannot be used for analog signalling
(a) F DM
(b) TDM
(c) CDM
(d) None of these

Q40. ln TDM systems, channel separation is done with the use of
(a) AND gates
(b) band-pass filters
(c) differentiator circuit
(d) integrator circuit

For all questions of EKT 1 2015 question paper  of electrical Electronics stream check out the pdf file given above in the post.