Previous Question Paper for EKT Exam for Electrical and Electronics Engineering
Guys this is sample question paper for EKT exam for Electrical and Electronics engineering you can use this as a
practice set, Questions asked in exam are not too tough regardless you know the basics of your field, just read out the maths basics: work on your aptitude well and prepare for your technical knowledge. luck also matters here as questions are objective base but don't try to attempt more questions by luck because negative marking is also there. Go and purchase a book from market for its preparation if you are serious enough, personally experienced that preparation portal don't have much info about EKT exams so its better to practice from a book.
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| EKT Question Paper Set for Electrical and Electronics |
I have provided a post regarding:
Q1. If sin x+(sin x) 2 =1, then
(a) cos x+(cos x) 2 =1
(b) cos x - (cos x) 2 =1
(c) (cos x) 2 - (cos x) =1
(d) (cos x) 2 + (cos x) 4 =1
(a) 50
(b) 125
(c) 150
(d) 300
Q3. The value of log 4 + log 5 - log 2 is
(a) 1
(b) 7
(c) 10
(d) 9/2
Q4. The probability of drawing an ace or a spade or both from a deck of cards is
(a) 4/52
(b) 13/52
(c) 1/52
(d) 16/52
Q5. Let 0 be the angle between two vectors a and b, then cos 0 is equal to
(a) mod a + mod b
(b) (a )+ mod b
(c) mod (a+b)
(d) ab/[ mod a x mod b]
Q6. Pressure is
(a) scalar
(b) vector
(c) pseudo vector
(d) Poynting vector
Q7. The force of attraction or repulsion between charges follows
(a) square law
(b) inverse square law
(c) both (a) and (b)
(d) none of (a) and (b)
Q8. The force experienced by a conductor of length L carrying current I placed parallel to the magnetic field of flux density B is
(a) BIL
(b) Zero
(c) HIL
(d) IL/B
Q9. A wave undergoes reflection from a rigid boundary. One of its characteristic parameters that changes is
(a) frequency
(b) phase
(c) velocity
(d) wavelength
Q10. The half-life period of a radioactive element is 140 days . After 560 days one gram of the element will reduce to
(a) 1/2 g
(b) 1/4 g
(c) 1/8 g
(d) 1/16 g
Q11. Which projection shows the object from angles in which the scales along each axis of object are equal
(a) auxiliary projection
(b) isometric projection
(c) orthographic projection
(d) objective projection
Q12. A charge of 2 coulombs every 0.5 sec signifies
(a) 4 A of current
(b) 1A of current
(c) 2A of current
(d) none of these
Q13. Transformer is a device used for
(a) converting AC to DC
(b) for stepping down AC Voltages
(c) both stepping up/down AC Voltages
(d) only stepping up AC Voltages
Q14. In order to get back the original signal from sampled signal , It is necessary to use
(a) low pass filter
(b) high pass filter
(c) band pass filter
(d) band reject filter
Q15. Superposition theorem can be applied only to circuits having elements
(a) non-linear
(b) passive
(c) linear bilateral
(d) resistive
Q16. Negative feedback reduces in amplifiers
(a) signal
(b) amplification
(c) distortion
(d) none of the above
Q17. Whenever the two inputs are same the output is high for
(a) EX-OR
(b) EX-NOR
(c) NOR
(d) NAND
Q18. In digital Electronics a nibble is a collection of
(a) 4 bits
(b) 2 bits
(c) 8 bits
(d) 10 bits
Q19. If both R=1 and S=1 in RS Flip Flop then Q is
(a) last value
(b) set
(c) reset
(d) forbidden
Q20. Ideal OP Amp's input resistance Is
(a) zero
(b) 100 k ohms
(c) Infinite
(d) 15 k ohm
Q21. A hard disk is divided into tracks which are further subdivided into
(a) clusters
(b) sectors
(c) vectors
(d) heads
Q22. Pentavalent impurities gives rise to more number of
(a) electrons in valence band
(b) electrons in conduction band
(c) holes in valence band
(d) holes in conduction band
Q23. A Varactor diode may be advantageous at microwave frequencies
(a) for electronic tuning
(b) as an oscillator
(c) as a parametric amplifier
(d) for frequency multiplication
Q24. When used in a circuit , a zener diode is always
(a) forward biased
(b) connected in series
(c) troubled by overheating
(d) reverse biased
Q25. The output from a laser is monochromatic , this means that it is
(a) infrared
(b) polarised
(c) narrow beam
(d) single frequency
Q26. In pneumatic control system, compensation is provided by
(a) bimetallic strip
(b) extension tube
(c) restriction volume tube
(d) none of the above
Q27. The main drawback of a feedback system is
(a) large time delay
(b) inefficiency
(c) inaccuracy
(d) unreliability
Q28. In an open loop control system
(a) control action is independent of the output
(b) control action depends upon human judgment
(c) internal system changes are automatically taken care of
(d) both (a) and (b)
Q29. Which of the following cannot be used to measure temperature
(a) thermocouple
(b) thermistor
(c) pyrometer
(d) thyristor
Q30. Poles are the complex frequencies of a transfer function where the response becomes
(a) infinite
(b) zero
(c) oscillatory
(d) decaying
Q31. The impulse response of an R-L circuit is a
(a) rising exponential function
(b) decaying exponential function
(c) step function
(d) parabolic function
Q32. The conversion of a signal representation from time domain to frequency domain is given by
(a) Fourier transform
(b) Shannon transform
(c) inverse Fourier transform
(d) inverse Laplace transform
Q33. The sampling theorem states that for a band limited signal of max frequency component fm
(a) fs>=2fm
(b) fs<=2fm
(c) fs<=2fm
(d) fs=fm
Q34. Voice signal frequency may lie anywhere between
(a) 0 to 20 KHz
(b) 0 to 1 MHz
(c) 15 Hz to 15 KHz
(d) none of these
Q35. Higher beamwidth of antenna implies
(a) higher directivity
(b) lesser directivity
(c) higher bandwidth
(d) lower bandwidth
Q36. PWM signal can be generated by
(a) a monostable multivibrator
(b) an astable multivibrator
(c) integrating PPM signal
(d) differentiating PPM signal
Q37. In broadcast receiver most of the selectivity is achieved in
(a) IF section
(b) RF section
(c) audio stage
(d) mixer
Q38. The IF bandwidth of a radar receiver is inversely proportional to the
(a) pulse width
(b) PRF
(c) pulse Interval
(d) square root of peak transmitted power
Q39. Quantizing noise occurs in
(a) TDM
(b) FDM
(c) PCM
(d) PWM
Q40. In order to separate channels in a FDM receiver it is necessary to use
(a) AND gates
(b) OR gates
(c) integration
(d) band pass filter
Q41. The physical layer, in reference to the OSI model, defines
(a) data link procedures that provide for the exchange of data via frames that can be sent and received
(b) the interface between the X.25 network and packet mode device
(c) the virtual circuit interface to packet-switched service
(d) all of the above
Q42. Which of the following device copies electrical signals from one Ethernet to another?
(a) bridge
(b) repeater
(c) hub
(d) passive hub
Q43. Which of the following TCP/IP protocol is used for transferring files from one machine to another?
(a) RARP
(b) ARP
(c) TCP
(d) FTP
Q44. What does the acronym ISDN stand for?
(a) Indian Standard Digital Network
(b) Integrated Services Digital Network
(c) Intelligent Services Digital Network
(d) Integrated Services Data Network
Q45. The following is measure of reproducibility in a measurement
(a) resolution
(b) drift
(c) precision
(d) fidelity
Q46. What part of the transformer is subjected to maximum heating
(a) core
(b) winding
(c) oil
(d) frame
Q47. The servo motor differs from ordinary motor in that it has
(a) low inertia & high torque
(b) high inertia & high torque
(c) low inertia & low torque
(d) high inertia & low torque
Q48. The speed of DC motor is
(a) always constant
(b) directly proportional to back emf
(c) directly proportional to flux
(d) inversely proportional to the product of back emf and flux
Q49. Which of the following DC generator cannot build up in an open circuit
(a) shunt
(b) series
(c) short shunt
(d) long shunt
Q50. The armature circuit resistance of DC generator is closest to
(a) 1 ohms
(b) 4n ohms
(c) 1000 ohms
(d) 20,000 ohms
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