| Post Name | TRADESMAN - ELECTRONICS - TECHNICAL EDUCATION |
|---|---|
| Question Paper Code | 061/2017 |
| Medium of Question | English |
| Exam Type | OMR Examination |
| Total Questions | 94 |
1
Cross over distortion will occur in
Answer
A. Push pull amplifiers
2
In MOD-10 counter, how many flip-flop are cascaded ?
Answer
B. 4
3
The reverse saturation current of a Ge P.N. junction doubles for every °C rise in ambient temperature
Answer
C. 10°C
4
Memory that loses its contents when power is lost
Answer
B. Volatile
5
In 8085, the instruction RAL is
Answer
A. One byte instruction
6
Modern FM receivers use de-emphasis circuit for
Answer
B. Reducing the amplitude of high frequencies in the audio signal
7
For sound portion of TV transmission, deviation ratio is
Answer
B. 1.67
8
Negative feedback reduces distortion in the amplifier only when it
Answer
B. is generated in it
9
The unit of dielectric strength is
Answer
A. KV/m
10
For insulators, the forbidden energy gap is of the order of
Answer
A. 5 eV
11
In an unbiased junction the thickness of charge depletion region is of the order of
Answer
B. 0.5 m
12
Schottky barrier diode can be used as
Answer
D. Low level detector
13
JFET has main drawback of
Answer
D. having small gain-bandwidth product
14
In voltage amplifiers the load resistance should be
Answer
A. as large as possible
15
Darlington amplifier circuit is obtained by cascading
Answer
A. two emitter follower amplifiers
16
To turn-off or commutate a thyristor
Answer
B. forced commutation is used
17
Thyristors are not made using germanium, because
Answer
D. it has high leakage current
18
A tuned amplifiers amplifies
Answer
D. a narrow band of frequencies
19
Wein bridge oscillator is basically a
Answer
B. sine wave generator
20
The ASCII Code is
Answer
B. 7 bit code
21
In 8085 P, the address of the next instruction to be executed, is stored in
Answer
C. program counter
22
A switched mode power supply operating at 20 KHz to 100 KHz range uses as the main switching element
Answer
B. MOSFET
23
Which represents a magnetic transducer ?
Answer
A. LVDT
24
A UJT with R = 10 K and RBZ = 4 K has intrinsic stand-off ratio BB
Answer
A. 0.6
25
To generate a 1 MHz signal, the most suitable oscillator is
Answer
A. Colpitts oscillator
26
Which material is generally used for LED ?
Answer
C. Compounds of gallium
27
Which of the following is a unipolar device ?
Answer
B. FET
28
An audio oscillator uses
Answer
A. Positive feedback
29
The binary equivalent of A16 is
Answer
A. 1010
30
Signal attenuation means is
Answer
D. Weakening
31
The power factor of a resonant circuit is (series RLC)
Answer
A. 1
32
In a home TV, the lead from the antenna is
Answer
C. a twin wire fat ribbon of 300 ohms
33
HDD stands for
Answer
C. Hard Disk Drive
34
Voltage for control grid is supplied by
Answer
A. EHT
35
An antenna is a device
Answer
C. That converts guided EM waves into free space EM waves and vice versa
36
To connect several microphone, PA amplifier system required
Answer
B. Mixture
37
VHF range is between
Answer
C. 30 – 300 MHz
38
The two colour different signal is designated as in PAL
Answer
B. U and V signals
40
The material used for making permanent magnet in PMMC is
Answer
B. Alnico
41
By using Boolean algebra ) )
Answer
D. 1
42
The antenna is matched to the RF amplifier by help
Answer
C. balun
43
What is the type active component used in electronic tuning ?
Answer
A. Varactor diode
44
LNBC stands for
Answer
D. Low Noise Blockdown Converter
45
In the truth table of JK flip-flop, the condition J = K = 1 represents
Answer
C. toggle
46
The heart of oscilloscope is
Answer
D. cathode ray tube
47
The technique used to generates HV in EHT is
Answer
A. split addition
48
A bistable circuit used to produce a rectangular output waveform is
Answer
C. Schmitt trigger
49
I AM radio receiver, the detection process is done by using
Answer
C. Diode detector
50
The I.F. (Intermediate Frequency) of F.M. radio receiver is
Answer
A. 10.7 MHz
52
Zener diodes are
Answer
B. reverse biased and heavily doped
53
The ability of a material to hold its magnetism after the magnetising force has been removed
Answer
C. Retentivity
54
The reciprocal of resistance
Answer
C. Conductance
56
Band II (88-108 MHz) is used for
Answer
B. FM radio broadcasting
57
The basic building block of any counter is
Answer
D. Flip-flop
58
KirchhoffÂ’s voltage law is concerned with
Answer
Question Cancelled
59
Ferrite cores commonly used at high frequencies
Answer
B. Decrease core losses
60
Rating of a battery is usually expressed in
Answer
C. Ampere-hour
61
The average value of an A.C. current wave given by i = 100 sin 100 t is
Answer
D. 63.7
62
Resonance curve shows the variation of circuit current with
Answer
C. Frequency
63
The time constant of RL circuit is
Answer
B. seconds L R
64
Avalanche breakdown is primarily dependent on the phenomenon of
Answer
A. Collision
65
The depletion region of a junction is formed
Answer
A. During the manufacturing process
66
The acceptor impurities are
Answer
B. Boron
67
Depletion region of P-N junction contains
Answer
A. Immobile ions
68
Counters can be also used for measurement of
Answer
D. Frequency
69
The negative resistance characteristic is in
Answer
B. Tunnel diode
70
A coil has XL = 1000 . If both its inductance and frequency are doubled, its reactance will becomes
Answer
D. 4000
73
A circuit with many inputs but only one output
Answer
A. Multiplexer
74
The method of winding of inductor
Answer
D. Both
76
The torque which stops the oscillations of the pointer of an instrument is called
Answer
B. Damping torque
77
A photosensitive resistor is
Answer
D. LDR
78
Specific gravity is measured by
Answer
A. Hydrometer
79
The ripple frequency of a full-wave rectifier is
Answer
B. 100 Hz
80
A frequency converter stage in radio receiver contains
Answer
A. Mixer and local oscillator
81
Indian Penal Code is not applicable at
Answer
B. Jammu and Kashmir
82
When did Kerala Legislative Assembly passed Malayalam Bhakha bill for promoting and enrich Malayalam language ?
Answer
Question Cancelled
83
Which animal is the symbol of the ‘Make in India’ initiative ?
Answer
C. Lion
84
Who was the first Indian President to die in office ?
Answer
D. Zakir Hussain
85
Which agitation in Kerala is known as the ‘Marumarakkal Samaram’ ?
Answer
C. Channar revolt
86
Who is the Human Resource Development Minister of Union Cabinet ?
Answer
A. Prakash Javadekar
87
How many organs are in a normal human body ?
Answer
C. 79
88
Who is the captain of the Keral team for the Santhosh Trophy Football Tournament 2017 ?
Answer
A. P. Usman
89
Who is known as the Nightingale of India ?
Answer
C. Sarojini Naidu
90
Which of the following project studied to ensure integrated development of Children up to 6 years ?
Answer
A. ICDS
91
Who is known as Kerala Lincoln ?
Answer
B. Pandit Karuppan
92
Name the first person nominated from Kerala to Rajya Sabha
Answer
A. Sardar K.M. Panikar
93
Who is the author of ‘A Long Way’ ?
Answer
D. P.V. Narasimha Rao
94
Nagaland is also known as
Answer
A. Land of festival
95
Which Taluk in Kerala have longest sea coastal area ?
Answer
B. Cherthala
96
Which place is known as ‘Gift of Pamba’ ?
Answer
A. Kuttanad
97
Name foreign country issue postal stamp for the sake of Sree Narayana Guru
Answer
B. Sri Lanka
98
Which Indian state have Common Civil Code ?
Answer
C. Goa
99
Which place is famous for natural sandal wood forest in Kerala ?
Answer
D. Marauyar
100
In 1936 India start its first National Park in which state ?
Answer
A. Uttarakhand
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