Electrical and Electronics EKT question paper of AFCAT 2 2014

Written by Ashis Dubey on Sep 02, 2014

Looking for Electrical and Electronics EKT question paper asked in AFCAT 2 2014 exam? Check out question paper of Electrical and Electronics engineering stream EKT here.

EKT Electronics and Electrical Question paper of AFCAT 2 2014

EKT AFCAT 2 2014 questions

There are total 50 questions asked in Engineering Knowledge Test of AFCAT 2 2014 examination. Each question carries 3 marks. Wrong answer will cost one mark.

Q1, When both inputs of NAND gate are same the operation is
(a) AND (b) NAND (c) NOT (d) NOR

Q2. Two bulbs when connected in parallel to a source take 100 W each. The total power consumed when they are connected in series with the same source is
(a) 200 W (b) 25 W (c) 100W (d) 50 W

Q3. In 8085 microprocessor is the highest priority interrupt
(a) trap (b) RST5.5 (c) RST (d) INTR

Q4. In digital Electronics a byte is a collection of
(a) 4 bits (b) 8 bits (c) 2 bits (d) 10 bits

Q5. A Zener diode is generally operated
(a) in a forward biased mode
(b) in a reverse biased mode
(c) with a very large value of n
(d)    all of the above
  Q6. In an AC circuit, resonance occurs when (a) resistance equals reactive reactance (b) capacitive reactance equals resistance (c) capacitive reactance equals reactive reactance (d) resistance equals capacitive and reactive reactance    Q7, The sampling rate to reproduce analog signal should beat least (a) twice the average signal frequency component (b) twice the fixed frequency component (c) twice the least signal frequency component (d) twice the maximum signal frequency component    Q8. Which semiconductor device acts like a diode & resistor (a) SCR (b) UJT (c) DIAC (d) TRIAC   Q9. The basic Ethernet design does not provide (a) automatic retransmission of a message (b) addressing (c) access control (d) multiple virtual networks   Q10. Which of the following TCP/IP protocol is used to monitor IP gateways and the networks to which they attach? (a) SGMP (b) SUMP (c) FTP (d) Both (a) and (b)    Q11. Which is not amplifier in control system (a) Amplidyne (b) Metadyne (c) DC motor (d) DC generator   Q12. Which of the following is incorrect (a) Routh's criterion is in time domain (b) Bode plot is in frequency domain (c) Nyquest criterion is in time domain (d) none of the above   Q13. Pulse communication system that is inherently highly immune to noise is  (a) PCM (b) PWM (c) PAM (d) PPM   Q14. In a transfer function, the frequencies for which the value of denominator becomes zero are called (a) Poles (b) Zeros (c) Roots (d) Solutions    Q15. A semiconductor photo device uses  (a) photo emissive effect (b) (c) photo voltaic effect (d)   Q16. The adaptive delta modulation avoids  (a) quantization error (b) Slope overload error (c) both(a) and (b) (d) none   Q17. The capacitance between two long parallel conduction depends upon  (a) diameter of wires (b) distance between wires (c) both A and B (d) none of the above   Q18. Indicate which of the following pulse modulation scheme is analog  (a) PCM (b) Differential PCM (c) Delta modulation (d) PWM   Q19. Transfer function of a system is used to calculate (a) the output for a given input  (b) the time constant (c) the order of the system        (d) the steady state gain   Q20. In MKS system , pressure is measured in (a) Dynes cm2 (b) dynes / cm2 (c) Newton / m2 (d)gmwt / cm2   Q21. Which of the projections shows an object as it looks from front, right, left, top, bottom Ci back (a) oblique projection (b) auxiliary projection (c) isometric projection (d) orthographic projection   Q22. One of the following cannot be used to remove the unwanted sideband in SSB (a) filter system (b) balanced modulator (c) third method (d) phase shift method   Q23. A bag contains 4 white, 5 red and 6 blue balls. Three balls are drawn at random from the bag. The probability that all of them are red, is: (a) 2/91 (b) 3/22 (c) 1/22 (d) 2/77   Q24. For which operation of a DC motor is generally preferred over an AC motor (a) low speed operation (b) high sped operation (c) fixed speed operation (d) variable speed operation   Q25. Formation of rainbow is due to the phenomenon of (a) dispersion and total internal reflection (b) dispersion (c) dispersion and reflection (d) light reflection   Q26. In an FM signal, there are (a) no sidebands (b) Infinite number of side bands (c) two side bands upper and lower (d) none of these   Q27. The efficiency of the transformer is maximum at (a) when copper loss is equal to iron loss (b) half load (c) 90 % load (d) full load   Q28. If both inputs of J-K Flip flop are same then it acts as (a) D-Type (b) SR FF (c) T-Type (d) Both (a) and (b)   Q29. In nuclear reactions we have conservation of (a) mass only (b) energy only (c) momentum only (d) mass, energy & momentum   Q30. A dc series motor (a) always runs at constant speed (b) should always be started on load (c) not suitable for high starting torque (d) may run always if the field becomes one   Q31. Fibre optic cable of network forms part of which layer in OSI model (a) physical (b) network (c) data link (d) transport   Q32. In a DC generator, the generated emf is directly proportional to the (a) number of dummy coils (b) number of armature parallel paths (c) pole flux (d) field current    Q33. _______ is used in reading a CD (a) LASER     (b) MESER (c) Neon light  (D) all of these   Q34. The value of log10x2-log10x at x=10 is (a) 4 (b) 2 (c) 0   (d) 1   Q35. Which of the following is an advantage to using fiber optics data transmission? (a) resistance to data theft (b) fast data transmission rate (c) low noise level (d) all of the above   Q36. A spot frequency from a signal can be rejected by (a) low pass filter (b) band pass filter (c) notch filter (d) band reject filter   Q37. Which one of the following transducers is used to obtain dc output position in a position control system (a) strain gauge (b) load cell (c) thermistor (d) synchro   Q38. Copper losses and core losses are  (a) generator losses (b) transformer losses (c) motor losses (d) all of the above   Q39. Pure semiconductors are poor conductors because (a) all valence electrons are in pairs (b) they have no holes (c) they have no valence electron (d) they have a number of holes    Q40. An ideal Current source has (a) infinite internal resistance (b) small internal resistance (c) zero internal resistance (d) none of the above   Q41. A rectangular box with square base is open at the top. The maximum volume of the box made from 1200 m2 tin is (a) 2000m3 (b) 3000m3 (c) 4000m3 (d) none of the above   Q42. Microwave link repeaters are typically 50Km apart because of (a) atmospheric attenuation (b) earth's curvature (c) output tube power limitation (d) both (a) and (b)   Q43. Backlash in a stable control system may cause (a) high level oscillations (b) overdamping (c) underdamping (d) low level oscillations   Q44. The value of i. (j x k ) + j.( i x k ) + k.( i x j) is equal to (a) -1 (b) -3 (c) 1 (d) 3   Q45. The Zener diode is sometimes called : (a) current regulator diode (b) voltage regulator diode (c) constant voltage diode (d) constant Current diode   Q46. Inductance of coil is directly proportional to square of (a) thickness of wire (b) spacing between adjacent turns (c) number and spacing between adjacent turns (d) number of turns   Q47. A function which completes a pattern within a measurable time frame and repeats that pattern over identical subsequent time frames is called  (a) continuous function (b) cyclic function (c) periodic function (d) recurrent function   Q48. Laplace transform of 314 is (a) f (b) 7 (c) £   Q49. The characteristic impedance of free space is  (a) 397 Ohms (b) 367 Ohms (c) 387 Ohms (d) 377 Ohms   Q50. The insulation resistance of cable, 1Km long is 1 mega ohms. Insulation resistance for 2 m is (a) 0.002 M Ohms   (b) 0.5 M Ohms  (c) 1M Ohms  (d) 5 M Ohms   So here were the fifty questions asked in Electrical and Electronics EKT question paper of AFCAT 2 2014.   Also read AFCAT 2 2014 question paper IAF's official sample Electronics and ELectrical EKT question paper EKT syllabus for Electrical and Electronics stream Expected EKT cut off

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