| Post Name | TRADESMAN - ELECTRONICS |
|---|---|
| Department | TECHNICAL EDUCATION - MPL & KGD |
| Question Paper Code | 144/2016 |
| Date of Test | 3 November 2016 |
| Medium of Question | ENGLISH |
| Exam Type | OMR Examination |
| Total Questions | 100 |
1
The nipple factor of a halfwave rectifier is wa | >
Answer
D. 1.21
2
Which of the following is the fastest switching component ?
Answer
A. MOSFET
3
The final power amplifier in a radio transmitter station is usually .
Answer
C. Class C
4
In AM radio receiver, the oscillator frequency is __
Answer
B. incoming signal + 455 kHz
5
The voltage gain of an emitter follower configuration can not be more than
Answer
A. 1
6
The doping concentration in zener diode is
Answer
B. very high
7
fe Binary number system uses ss sy bos.
Answer
D. 2
8
Tnmmer is a variable F
Answer
C. capacitor
9
The number of turns in secondary of a__-——_—stransformer is more than the primary.
Answer
B. step - up
10
Ina PN junction diode the barrier potential offers opposition to ;
Answer
B. Majority charge carriers in both regions
11
Negative feedback in amplifier == tthe stability of its voltage gain.
Answer
A. increases
12
The time-base of a CRO is waveform.
Answer
A. sawtooth
13
Moving iron meter is usually used for measurement of :
Answer
A. AC and DC
14
Integrator is a filter.
Answer
B. low pass
15
OP-AMP may be used as :
Answer
D. all the above
16
The timer IC 555 is available in _ _ package.
Answer
C. 8 pin DIP
17
IGBT stands for
Answer
D. Insulated Gate Bipolar Transistor
18
IC 7912 is ,
Answer
C. Negative voltage regulator for 12 V
19
In On-line UPS, the battery is connected
Answer
A. All the time to the inverter
20
The program counter in 8085 microprocessor is of bit,
Answer
B. 16
21
Which of the following is a bidirectional device ?
Answer
D. Triac
22
Henrv is the unit of __ ——
Answer
C. Inductance
23
A half adder circuit canadd ___ bits at a time.
Answer
A. 2
24
Which of the following is a single input flip-flop ?
Answer
B. D
25
Time constant of RC circuit is the time during which capacitor voltage rises to %
of its final steady value.
Answer
C. 63
26
Which of the following is an insulator 7?
Answer
A. Ferrite
27
Antimony is a __. type doping material.
Answer
D. Pentavalent
28
Adynamic microphone isa Sst pe transducer.
Answer
A. Acoustical
29
The function of NOT gate is to
Answer
A. Invert an input signal
30
The channel width in PAL system is
Answer
D. 7 MHz
31
Clamping circuits make use of adding a ______ level into an ac signal.
Answer
B. DC
32
Which of the following statements is not related to Ohm’s law ?
Answer
D. Law is independent of temperature
33
Which of the following is not used for making LED ?
Answer
A. Germanium
34
In SCR if the conduction angle is less, the output, is
Answer
B. Less
35
The ripple output frequency of bridge rectifier in 50 Hz supply is Hz.
Answer
C. c) 100
36
At saturation point of transistor, Vᴄᴇ = ______ volt.
Answer
A. Zero
37
Ina multistage amplifier, the overall voltage gain is equal to sof the gains of
individual stages,
Answer
C. Product
38
AM wave has ___. side bands.
Answer
D. two
39
[Fin AM radio receivers is obtained by _ ie
Answer
B. Heterodyning
40
Barkhausen criterion is important in .
Answer
A. Oscillation
41
oscillator is not a sinusoidal oscillator,
Answer
D. UJT relaxation
42
The statement not related toa diacis .-—-—S«_—sr-...
Answer
B. It is an SCR without its gate terminal
43
The image continuity in motion pictures is obtained by the property of .
Answer
D. Persistence of vision
44
dB is used to measure
Answer
A. power level
45
Cross over distortion occurs in type of amplifiers.
Answer
D. Push-pull
46
The leakage current in a transistor is _ dependent ori.
Answer
A. j) Temperature
47
BIT is
Answer
C. NPN or PNP transistor
48
Atomic number of Silicon is ete
Answer
C. c) 14
49
Yellow, Violet, Red indicates Ohms.
Answer
C. 47k
50
loss is not a transformer loss.
Answer
D. Dielectric
51
SCR has lavers.
Answer
B. PNPN
52
53
88-108 MHz band of frequencies is used for __. broadcasting.
Answer
B. FM
54
In FM receivers, limiter is used
Answer
B. To eliminate amplitude variations
55
The frequency range used for RADAR is :
Answer
C. UHF and Microwave
56
Approximate distance of geostationary satellite from earth is —s
Answer
C. 36,000 kms
57
Recording in compact disc is done with the help of Se
Answer
A. Laser
58
od. is not a semiconductor memory. |
Answer
C. c) CD
59
60
The processor chip S8U85A has pins, |
Answer
C. c) 40
61
The heartofaCROis |.
Answer
A. Cathode ray tube
62
The function of the emitter bypass capacitor ina CE amplifier isto = =,
Answer
C. Provide a low resistance path for ac signals
63
The minimum forward bias voltage for a Germanium PN junction to set into conduction is
a __- Volt.
Answer
D. 0.3
64
The width of the collector layer in a transistor is ==.
Answer
C. Much greater than that of the base region
65
In NPN transistors, the majority charge carriers are
Answer
B. Electrons
66
diode is used in reverse biased condition for its normal working.
|
|
Answer
A. Zener
67
An etchant used in PCB making is _ wt
|
Answer
A. Ferric Chioride
68
The most common component used in ripple filter circuits 15
Answer
C. Capacitor
69
voltage is the maximum reverse voltage that a diode can withstand.
Answer
A. Peak inverse
70
When two capacitors are connected in series, the effective capacitance is is
Answer
B. Decreases
71
When ten resistors each of 47 {) are connected in parallel, the net resistance of the combination
is Ohms.
Answer
D. 4.7
72
The quality factor ‘Q’ of an ideal inductor is :
Answer
D. Infinity
144/2016 10 A
73
| is not a variable resistor,
Answer
B. Varactor
74
Insulation resistance can be measured using
Answer
B. Mepger
75
Bistable multivibrator is also called as ,
Answer
D. Flip-flop
76
Colpitts oscillator uses __ feedback.
Answer
B. positive
77
The binary number 1111 corresponds to hexadecimal number.
Answer
D. F
78
The voltage regulation of an ideal regulated power supply is __ ‘ho.
Answer
D. 0
79
The input impedance of a JFET is high because ’
Answer
B. its input is reverse biased
80
has no gate terminal.
Answer
D. Diac
81
Mazagoan is famous for :
Answer
D. Ship building
A 11 144/2016
{P.T.O.|
82
. Which of the following rivers flows west ward ?
Answer
C. Narmada
83
Which is not an ancient town ?
Answer
B. Mumbai
84
The least populated Union Territory in India is ;
Answer
C. Lakshadweep
85
Pradhan Mantri Fasal Bima Yojana (PMFBY) aimed to :
|
Answer
A. Crop Insurance Scheme
|
86
The Dandi March was organised by Gandhiji to :
|
Answer
B. Break the Salt Laws
87
New India and Commonweal two news papers during the Home Rule were edited by :
Answer
A. Mrs, Annie Besant
88
Who is the first women president of Indian National Congress ?
Answer
D. Mrs. Annie Besant
144/2016 12 A
89
Which is the Naval Port in Kerala ?
Answer
B. Kochi
90
Parambikulam Wildlife Sanctuary is in :
Answer
A. Palakkad
91
In which year Mahatma Gandhi visited Sree Narayan Guru ?
Answer
C. 1925
92
Which movement was started by Kumara Guru at [raviperur ?
Answer
D. Prathyaksha Raksha Daiva Sabha
93
Who is the founder of Sadhujana Paripalana Yogam ?
Answer
B. Avyyankali |
94
Who popularised Arabic Malayalam by publishing, monthly called Al Islam ?
Answer
B. Vakkom Abdul Khader Maulavi
95
Who led the Vimochana Samaram which resulted in the dismissal of the EMS Namboodiripad
Ministry ?
Answer
C. Mannath Padmanabhan
96
Who won the women’s single tennis title in Wimbledon, 2016 ?
Answer
D. Serena Williams
A 13 144/2016
{P.T.O.)
97
Who is the present Chief Minister of Arunachal Pradesh ? |
Answer
A. Pema Khandu
98
Who is the Chief Executive Officer
Answer
C. EO) in NITI Aayog ?
99
Who is the famous Bollywood filmstar selected as Good Will ambassador to Rio-Olympic
Indian Team ?
Answer
D. Salman Khan
100
In which date India launched IRNSS - 1G from Satheesh Dhawan Space Centre Sri Hari
Kotta ?
Answer
A. 28" April, 2016
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