Engineering Knowledge test [EKT] paper was for the first time introduced in 2014-2 AFCAT exam. There were a total of 50 questions related to different subjects of electrical, electronic and communication engineering. The question were very basic in nature and very few numerical were asked. The engineering syllabus that is asked in EKT exam is very wide, so proper preparation is required.
The following are the questions EKT 2014-2 Electrical And Electronic paper that was held on 31 August 2014.
1. When both inputs of NAND gate are same the operation is
(a) AND (b) NAND (c) NOT (d) NOR
2. 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) 100 W (d) 50 W
3. In 8085 microprocessor ….. is the highest priority interrupt
(a) trap (b) RST5.5 (c) RST (d) INTR
4. In digital Electronics a byte is a collection of
(a) 4 bits (b) 8 bits (c) 2 bits (d)10 bits
5. 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 reverse bias (d) all of the above
6. 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
7. 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
8. Which semiconductor device acts like a diode & resistor
(a) SCR (b) UJT (c) DIAC (d) TRIAC
9. The basic Ethernet design does not provide
(a) automatic retransmission of a massage (b) addressing (c) access control (d) multiple virtual networks
10. 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
11. Which is not an amplifier in control system?
(a) Amplidyne (b) Metadyne (c) DC motor (d) DC generator
12. 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
13. Pulse communication system that is inherently highly immune to noise is
(a) PCM (b) PWM (c) PAM (d) PPM
14. In a transfer function, the frequencies for which the value of denominator becomes zero are called
(a) Poles (b) Zeros (c) Roots (d) Solutions
15. A semiconductor photo device uses
(a) photo emissive effect (b) photo conductive effect (c) photo voltaic effect (d) none of the above
16. The adaptive delta modulation avoids
(a) quantization error (b) slope overload error (c) both a and b (d) none of the above
17. Indicate which of the following pulse modulation scheme is along
(a) PCM (b) Differential PCM (c) Delta modulation (d) PWM
19. 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
20. In MKS system pressure is measured in
(a) Dynes cm^2 (b) dynes /cm^2 (c)Newton /cm^2 (d)gmwt/cm^2
21. Which of the projections shows an object as it looks from front, right, left, top, bottom or back
(a) oblique projection (b) auxiliary projection (c) isometric projection (d) orthographic projection
22. 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
23. 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
24. For which operation of a DC motor is generally preferred over an AC motor
(a) low speed operation (b)high speed operation (c) fixed speed operation (d)variable speed operation
25. Formation of rainbow is due to the phenomenon of
(a) dispersion and total internal reflection (b) dispersion (c) dispersion and reflection (d) light reflection
26. In an FM signal, there are
(a) no sidebands (b) infinite number of sidebands (c) two sidebands upper and lower (d)none of these
………………..
For complete paper of the AFCAT 2 1014 engineering knowledge test (EKT) [electronic and electrical stream] paper check out the below given PDF file.
