exams.puchd.ac.in M.Tech OCET Other Common Entrance Test Question Paper : Panjab University
University : Panjab University
Exam : M.Tech Other Common Entrance Test OCET
Document Type : Question Booklet
Website : exams.puchd.ac.in
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M.Tech OCET Question Paper :
Subject : M.Tech. (Instrumentation)
Time : 90 minutes
Number of Questions : 75
Maximum Marks : 75
Related : Panjab University Computer Science CET Common Entrance Test Question Paper : www.pdfquestion.in/5574.html
M.Tech. (Instrumentation)/A/OEC-22657 2
1. What is maximum data capacity for optical fiber cable –
(A) 10 mbps (B) 100 mbps (C) 1000 mbps (D) 10000 mbps
2. What is the central device in star topology in computer networking –
(A) STP server (B) Hub/Switch (C) PDC (D) Router
3. The number of digits in Hexadecimal system is :
(A) 15 (B) 17 (C) 16 (D) 8
4. For large networks ______ topology is used.
(A) Bus (B) Star (C) Ring (D) Delta
5. ISO stands for :
(A) International Standard Organization (B) International Student Organization
(C) Integrated Services Organization (D) International Service Organization
6. Resistivity of silicon in ohms cm is approx. equal to :
(A) 50 K (B) 1012 ohm (C) 230 K (D) 10-6 ohm
7. A Kb corresponds to :
(A) 1024 bits (B) 1000 bytes (C) 1048 bytes (D) 948 bits
8. The forbidden energy gap for silicon is :
(A) 1.1 eV (B) 067 eV (C) 0.97 eV (D) 1.7 eV
9. Impurity atoms that produces N type material by its addition
(A) Donor (B) Acceptor (C) Conductor (D) Insulator
10. IC 8085 is a :
(A) Microcontroller (B) Microprocessor(C) Micromemory (D) Arithmetic
11. Point contact diodes are preferred at very high frequency
(A) Capacitance and inductance (B) Inductance (C) Capacitance (D) Mobility
12. Another name for horizontal retrace in TV receiver is the :
(A) Ringing (B) Burst (C) Damper (D) Fly back
13. Another name for the colour sync in the colour TV system :
(A) Ringing (B) Burst (C) Damper (D) Fly back
14. In a transistor if Alpha = 0.98, current gain is equal to :
(A) 29 (B) 59 (C) 69 (D) 49
15. The active region in the common emitter configuration means :
(A) Both collector and emitter junction is reverse biased
(B) The collector junction is forward biased and emitter junction
(C) The collector junction is reverse biased and emitter junction is forward biased
(D) Both collector and emitter junction are forward biased
16. In an amplitude modulated signal, lower side band frequency
(A) fm + fc (B) fc – fm (C) fm r fc (D) fc/fm
17. Modulation index of the frequency modulation depends on :
(A) Amplitude and frequency of the modulation signal
(B) Frequency and amplitude of carrier signal
(C) Carrier frequency(D) None of these
18. Reverse saturation current of a Ge diode is in the range of :
(A) mA (B) uA (C) nA (D) pA
19. Every 10ºC rise in temperature the reverse saturation current of diode :
(A) Doubles (B) Halves
(C) Triples (D) No change
20. A Metal or Semiconductor carrying a current I is placed in a transverse magnetic field B, an electric field E is induced in :
(A) Parallel to B (B) Prependicular to I
(C) Perpendicular to both B and I (D) Prependicular to B
21. 1 eV (electron volt) is equal to :
(A) 6.23 × 10–20 J (B) 1.6 × 10–19 J
(C) 6.23 × 10–18 J (D) 1.16 × 10–19 J
22. Germanium has the valency of :
(A) 2 (B) 3
(C) 4 (D) 5
23. Hole acts as a free charge carrier of polarity :
(A) Negative (B) Positive
(C) Neutral (D) Depends on temperature
24. Notch filter is :
(A) Low pass filter (B) High pass filter
(C) Narrow stop band filter (D) Narrow pass band filter
25. The characteristics of FET are similar to :
(A) Triode (B) Tertode
(C) Pentode (D) Diode
26. Charge coupled device is an array of capacitors whose structure is similar to :
(A) Shift register (B) Flip-flop
(C) NAND gate (D) Amplifier
27. Operational amplifier characteristics are which of the following ?
(A) Infinite gain
(B) Low input impedance
(C) Output impedance equal to output impedance
(D) Inifinite output impedance
28. The important application of Schmitt trigger is :
(A) To convert slowly varying input voltage to abrupt voltage change
(B) To convert abruptly varying input voltage into slowly varying output
(C) To change the frequency of the input
(D) None of these
29. Meaning of decoding is :
(A) Binary addition (B) Data transmission
(C) Demultiplexing (D) Storage of binary information
30. The important use of low pass filter in power supply is :
(A) To get the regulation in the output voltage (B) To filter out the ripple frequency
(C) To increase the current rating (D) To convert AC into DC