| Post Name | LECTURER IN ELECTRONICS ENGINEERING -NCA- TECHNICAL EDUCATION |
|---|---|
| Department | Technical Education |
| Question Paper Code | 098/2017/OL |
| Category Code | 472/2016 |
| Date of Test | 27 December 2017 |
| Medium of Question | ENGLISH |
| Exam Type | Online Examination |
| Total Questions | 100 |
1
Who launched Kudumbasree programmes in Kerala ?
Answer
A. A.B. Vajpaye
2
Which governor General of India was responsible for the appointment of Hunter Commission , the first Indian Education Commission of 3rd February 1882 ?
Answer
C. Lord Rippon
3
Who established "Prathyaksha Raksha Daiva Sabha" on 1909 ?
Answer
B. Poikayil Yohannan
4
Which Travancore ruler proclaimed the historic temple entry proclamation on 1936 ?
Answer
D. Shri Chithirathirunal Balarama Varma
5
Who was the 'Father of Malayalam Journalism' ?
Answer
B. Chengulathu Kunjirama Menon
6
Who is known as 'Kerala Kalidasan' ?
Answer
D. Kerala Varma Valiya Koil Thampuran
7
Who was the founder and editor of the journal called 'Shreemathi' ?
Answer
B. Anna Chandi
8
Who wrote the biography 'Kanneerum Kinavum' ?
Answer
D. V.T. Bhattathirippad
9
Who was famous for his quotation "The whole universe is one mind between mind and mind there is no vacuum" ?
Answer
B. Chattambi Swamikal
10
Which was the highest literacy award in Kerala ?
Answer
D. Ezhuthachan Award
11
If [[x β y, z], [2x β y, w]] = [[β1, 4], [0, 5]], the value of (x + y)/(z β w) is
Answer
C. -3
12
If Aα΅’β±Ό is the cofactor of the element aα΅’β±Ό of the determinant |2 β3 5; 6 0 4; 1 5 β7|, then the value of aββAββ is
Answer
A. 110
13
The 4th term of (3x β 1/(3x))βΆ is
Answer
B. β20
14
If A + B = 45Β° then (1+tan A) (1+ tan B) is
Answer
D. 2
15
The acute angle between the lines 3x + y -7 =0 and x+2y+9=0 is
Answer
A. 45Β°
16
lim(xβ2) (xβx β 2β2)/(x β 2) is
Answer
B. 3/β2
17
The equation of the normal to the curve x=2t, y=2/t at t = 1 is
Answer
A. x = y
18
β« 2xβ΄/(1 + xΒΉβ°) dx is
Answer
C. (2/5) tanβ»ΒΉ(xβ΅) + c
19
The area included between one arch of the curve y=sin x and the x-axis is
Answer
B. 2
20
The solution of dy/dx + (2x/(1 + xΒ²))y = 1/(1 + xΒ²) is
Answer
D. y = (x + c)/(1 + xΒ²)
21
_______________ amplifier is commonly used as a frequency multiplier.
Answer
C. Class C
22
Removing bypass capacitor across the emitter-leg resistor in a CE amplifier causes
Answer
D. Decrease in voltage gain
23
If the maximum collector current due to signal alone is 3mA, then zero signal collector current should be at least equal to
Answer
C. 3mA
24
In a multistage amplifier, the overall frequency response is determined by the
Answer
A. Frequency response of each stage depending on the relationships of the critical frequencies
25
Halving the power corresponds to a ______________dB _____________
Answer
B. 3, decrease
26
If negative feedback is introduced in amplifiers with shunt current configuration, the input resistance will
Answer
D. Decrease
27
Pinch-off voltage Vβ for an FET is the drain voltage at which
Answer
C. All free charges get removed from the channel
28
Compared to bipolar transistor, a JFET has
Answer
A. Higher input impedance and low voltage gain
29
Class AB operation is ______________ operation.
Answer
D. none of the above
30
The ripple factor of a full-wave rectifier circuit compared to that of a half wave rectifier circuit without filter is
Answer
B. Less than half that for a half-wave rectifier circuit
31
A capacitor is fully charged when
Answer
B. The current through the capacitor is the same as when the capacitor is discharged
32
The saturation condition of transistor implies that
Answer
D. All of the above
33
The output of a particular op-amp increases 8 V in 12 Β΅s. The slew rate is
Answer
B. 0.67 V/Β΅s
34
With zero volts on both inputs, an Op-amp ideally should have an output
Answer
C. Equal to zero
35
Determine the output resistance of differential amplifier with three op-amp. The op-amp used in 741c, with A = 200000 and Rβ. The output and difference of input voltages are 44 and 11.
Answer
D. 1.5 MΞ©
36
The bandwidth of the differential amplifier increases, if the value of
Answer
B. Closed Loop Voltage Gain Decreases
37
If the gain of a non-inverting averaging amplifier is one. Determine the input voltages, if the output voltage is 3v
Answer
D. Vβ = 7v, Vβ = 4v and Vβ = -3v
38
In differential op-amp configuration a subtractor is called as
Answer
A. Scaling amplifier
39
An ideal operational amplifier has
Answer
C. Infinite bandwidth
40
How the op-amp comparator should be choosen to get higher speed of operation ?
Answer
A. Wider bandwidth
41
The gain of the first order low pass filter
Answer
C. Decreases at the rate 20dB/decade
42
The poles of the transfer function of normalized low pass butter worth filter exists
Answer
A. On unit circle
43
A stable multivibrator operating at 150 Hz has a discharge time of 2.5 ms. The duty cycle of the circuit is
Answer
D. 37.5%
44
Calculate the output frequency in a frequency multiplier if, fin = 200 Hz is applied to a 7 divide by N-network.
Answer
C. 1.4 kHz
45
Convert binary 111111110010 to hexadecimal
Answer
B. (FF2)ββ
46
Which gate is best used as a basic comparator ?
Answer
D. Exclusive-OR
47
A decoder can be used as a demultiplexer by
Answer
D. using the input lines for data selection and an enable line for data input
48
A binary code that progresses such that only one bit changes between two successive codes is
Answer
A. Gray code
49
A MOD-16 ripple counter is holding the count (1001)β. What will the count be after 31 clock pulses?
Answer
A. (1000)β
50
Select the statement that best describes Read-Only Memory (ROM).
Answer
B. Non-volatile, used to store information that does not change during system operation
51
Which of the following logic families has the shortest propagation delay ?
Answer
C. ECL
52
A binary input 000 is fed to a 3 bit DAC/ADC. The resultant output is 101. Find the type of error ?
Answer
A. Offset error
53
The transmit buffer of serial data buffer is a
Answer
B. Parallel-in serial-out register
54
The register that provides control and status information about serial port is
Answer
C. PCON and SCON
55
The instruction that performs logical AND operation and the result of the operation is not available is
Answer
D. TEST
56
Which instruction cannot force the 8086 processor out of 'halt' state ?
Answer
A. Hold
57
What is the carrier frequency in an AM wave when its highest frequency component is 850 Hz and the bandwidth of the signal is 50 Hz ?
Answer
D. 825 Hz
58
A 100 MHz carrier is frequency modulated by 10 KHz wave. For a frequency deviation of 50 KHz, calculate the modulation index of the FM signal.
Answer
B. 50
59
After passing the FM signal through mixer, what is the change in the frequency deviation Ξ when the modulating frequency is doubled ?
Answer
D. Remains unchanged
60
Pre emphasis is done
Answer
D. All of the above
61
What is the DFT of the four point sequence x(n) = {0, 1, 2, 3} ?
Answer
C. {6, -2+2j, -2, -2-2j}
62
Which kind of polarization is provided by helical antennas ?
Answer
A. Circular
63
Which has same probability of error ?
Answer
C. BPSK and PAM
64
In MSK, the difference between the higher and lower frequency is
Answer
D. Half of the bit rate
65
The data rate of QPSK is _____________ of BPSK.
Answer
B. Twice
66
TDMA allows the user to have
Answer
B. Use of same frequency channel for different time slot
67
Unauthorised access of information from a wireless device through a bluetooth connection is called``
Answer
A. Bluesnarfing
68
In a TWT the amplitude of resultant wave travelling down the helix
Answer
A. Increases exponentially
69
If the gate current of an SCR is increased, the forward breakdown voltage will
Answer
C. Not be affected
70
What is the range of the operating voltage level for LEDs ?
Answer
B. 1.7-3.3 V
71
To turn on UJT, the forward bias on the emitter diode should be ______________ the peak point voltage.
Answer
C. More than
72
The device that does not have the gate terminal is
Answer
D. Diac
73
If the negative potential on the control grid of CRT is increased, the intensity of spot
Answer
B. is decreased
74
The sensitivity of a multimeter is given in
Answer
C. kΞ©/V
75
The controlling parameter in IGBT is the
Answer
B. V_GE
76
In a loss less inverter, the average power absorbed in one period by the load must be
Answer
A. Equal to the average power supplied by the dc source
77
A module in a solar panel refers to
Answer
C. Series and parallel arrangement of solar cells
78
A laser diode normally emits
Answer
A. Coherent and monochromatic light
79
The quality of output AC voltage of cycloconverter is improved with
Answer
B. Increase in output voltage at increased frequency
80
With the increase in the intensity of light, the resistance of a photovoltaic cell
Answer
A. Decreases
81
LED
Answer
C. Emits light due to recombination of holes and electrons
82
SPST, SPDT, DPDT and DPST are
Answer
D. Electrical relay contact types
83
The 8 bit micro controller has
Answer
A. Data bus of 8 bits
84
The additional features of 3G that are not available with 2G are i) Mobile TV ii) MMS iii) Video transfers iv) GPS
Answer
B. i, iii, iv
85
5Ah in an UPS battery specification means
Answer
A. 5A for 1 hour
86
The 43-grade cement means that the compressive strength of the cement mortar cube after 28 days is
Answer
C. 43 MPa
87
The process of establishing intermediate points on a survey line joining the end points is called
Answer
B. Ranging
88
Choice of type of foundation depends on
Answer
D. All the above
89
The following one is an example of electronic distance meter
Answer
B. Distomat
90
The manufacturing process of concrete is in the following order
Answer
A. Proportioning, batching, mixing, transporting, placing, compacting and curing
91
In a four stroke cycle engine, the cam shaft completes
Answer
A. Half the revolution of crank shaft
92
The thermal efficiency of a four stroke petrol engine as compared to two stroke petrol engine is
Answer
B. More
93
While starting the engine, the pinion gear of the starter motor meshes with
Answer
A. Fly wheel ring gear
94
Rankine cycle consists of
Answer
D. Two isentropic processes and two constant pressure processes
95
The correct order of the path of flue gas is
Answer
C. superheater, economiser, air heater, precipitator
96
A DC source is supplying two resistors connected in parallel. If Rβ = 2Rβ, determine the relation between the power dissipated in them
Answer
A. Pβ =0.5 Pβ
97
If an AC voltage source of magnitude 100β2 sin(Οt) is causing a current flow of 10 sin(Οt β 45Β°) A, determine the load.
Answer
A. 10 + j10 Ξ©
98
Which one among the following is not an over voltage protective system ?
Answer
D. Earth-leakage circuit breaker
99
If a dielectric slab of thickness 't' relative permeability of 2 is inserted between the parallel plates of an air capacitor, the capacitance of the new arrangement will
Answer
C. Increase
100
Which one among the following is not a transmission voltage in Kerala ?
Answer
B. 55 kV
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