| Post Name | TRADESMAN - ELECTRONICS AND INSTRUMENTATION |
|---|---|
| Department | TECHNICAL EDUCATION |
| Question Paper Code | 178/2014 |
| Date of Test | 28 October 2014 |
| Medium of Question | ENGLISH |
| Exam Type | OMR Examination |
| Total Questions | 100 |
1
The colour code of a 1k resistance is:
Answer
C. Brown,black,red
2
An ideal voltage source has :
Answer
A. Zero internal resistance
3
The scale used with a moving coil meter is:
Answer
A. Linear
4
Electrodynamometer type of instruments can be used to measure :
.
Answer
C. Both DC and AC
5
Which of the following will serve as a donor impurity in silicon?
Answer
D. Antimony
6
What is the barrier potential of a silicon diode at room temperature?
|
Answer
B. 0.7V
|
7
Ripple factor of a full wave rectifier without filter will be :
Answer
B. 0.48
8
The output voltage of a Common Emitter amplifier is - .
Answer
D. All of the above
A 3
| . RRO}
9
The output waveform of a 555 timer is: ;
Answer
C. Rectangular
10
When Q decreases in a Colpits oscillator , the frequency of oscillation :
Answer
B. Decrease
11
The property of an ideal Op amp are :
Answer
D. None of the above
12
An aquadag is used in a CRO to collect : |
Answer
B. Secondary emission electrons 3 |
13
The Diacisa:
Answer
D. Bidirectional device
14
The NAND gate output will be low if the two inputs are -
Answer
D. y) 11 |
15
A half adder circuit has two inputs and :
Answer
B. Two output | |
16
The speed of conversion is maximum in :
Answer
B. Parallel-comparative A/D converter
17
Adevice which converts BCD to Seven Segment is called:
Answer
A. Decoder
18
Which technology is wsed in a CD ROM Drive?
Answer
C. Optical
19
In 8085 name the 16 bit registers :
Answer
D. (A) and (B)
20
In 8255,under the I/O mode of operation, we have —-—————————_. modes.
Answer
B. 3
'
21
Increasing the number of turns of wire on the secondary of a transformer will :
Answer
A. decrease the secondary current | :
22
Which of the following is an undesirable dynamic characteristic of an instrument?
Answer
C. Timelag
23
The unit of Magnetic Flux is :
Answer
C. Weber
24
Strain gauge, thermocouple and LVDT are examples of :
Answer
C. Analog transducers
25
The degree of reproducibility among several independent measurements of same true value
under reference conditions is known as:
Answer
C. Precision
26
Stroboscope is used for measurement of:
Answer
C. Speed
27
Residual voltage in the LVDT is the :
,
Answer
D. Voltage when the core is at the null position
28
Flapper nozzle is used in a/an ——————---— controller.
|
Answer
A. Pneumatic
29
Radiation Pyrometers are used in the temperature range of :
Answer
A. 1200 -2500°C
30
The operation of a rotameter is based on :
Answer
D. variable flow area
31
Which of the following temperature measuring instruments need not touch the object whose
temperature is being measured? .
|
Answer
A. Radiation Pyrometer
32
A magnetic flow meter is:
|
Answer
D. all
33
34
Which of the following thermocouples can measure the maximum temperature? |
Answer
C. Tungsten-Molybdenum
35
Thermistors are made of :
Answer
D. metal oxides |
36
A barometer-measures the ————————— pressure.
Answer
A. Absolute
37
The strain gauge should have low : |
Answer
A. Resistance temperature coefficient
38
Pick the odd one out :
Answer
D. Resistance-wire strain gauge
39
Feed forward controller accounts for the ———————--———— changes.
Answer
B. load
40
Pirani gauge is used for the measurement of :
Answer
D. Ingh vacuum
A 7 178/2014
[P.T.O.]
41
The deflection of the free end of the bimetallic strips in a bimetallic thermometer with
temperature is nearly:
~
Answer
A. linear
42
Positioning controllers are used for:
Answer
B. high loads
43
Use of I-control along with P-control facilitates :
Answer
A. elimination of offset
44
Which of the following is not a mechanical pressure sensing element?
;
Answer
D. U-tube
45
On-off controllers are normally used for : |
CA) low loads
Answer
Question Cancelled
46
pH meter has:
Answer
B. two cells
47
Which of the following is not a differential pressure flow meter ?
Answer
C. Rota meter -
48
Very low pressure is expresssed in microns(s), which is equal to —-——-——_ mm of Hg
coloumn
Answer
A. bsolute) at 0°C.
49
Cascade control means: |
Answer
B. more than one feed-back loop
50
On-off control, which is a special case of proportional control, has a band width of about
—_————— percent.
Answer
D. p oO
51
Solenoid valves are operated by :
Answer
C. Electrical signal |
52
A control valve shows the flow is directly proportional to the valve opening for a constant
pressure drop is :
Answer
A. Linear valve.
53
The scan time of PLC depends on:
Answer
D. All the above
54
a4. ‘The input device used for PLC is:
Answer
A. Push buttons
55
The quick opening valve that consist of a metal circular disk with ite pivot axes at mght
angles to the direction of flow in the pipe is called :
Answer
A. Butterfly valve
56
When transistors are used in digital circuits they usually operate in the :
Answer
C. saturation and cutoff regions
57
Another name for a unity gain amplifier is :
|
Answer
C. voltage follower
58
The number of bits used to store a BCD digit is:
Answer
B. 4
59
How will electrons flow through a p-channel JFET?
Answer
B. from drain to source
60
What is the reactance value for a capacitor installed in a dc circuit?
Answer
A. Infinite
61
How many valence electrons are in every semiconductor material?
Answer
D. 4
62
Voltage regulation requires :
Answer
D. load and line regulation
63
NAND gates means: ;
Answer
B. AND gate followed by an inverter
64
Total number of cells in the Karnaugh map of a switching function (X,Y,Z) consisting of any
three variables is :
Answer
B. 8
65
Fora MOSFET, the gate current :
Answer
B. Is negligibly small
66
Four variable logic expression can be realized using only one :
Answer
C. 16:1 Multiplexer
67
Race around condition occurs in a JK Flip Flop when?
Answer
B. Both the inputs are |
;
68
The number of Flip Flops required for a MOD- 16 ring counter are :
Answer
D. 16
69
According to Kirchoffs current law :
Answer
D. Algebra sum of the currents meeting at the junction is zero
70
Which of the following capacitor can have the highest capacitance value?
Answer
C. Electrolytic
71
The gain of a cascaded amplifier is equal to:
Answer
A. Product of individual gain
72
A‘d Arsonval galvanometer can have the instrument error due to : |
Answer
C. Friction in bearing
73
The time base of a CRO is developed by
Answer
D. Saw tooth waveform
A 11 178/2014
| [P.T.O.]
74
The XY recorder records :
Answer
B. One parameter with reference to the other parameter
75
Ina practical RC oscillator, to meet phase shift requirement we need :
Answer
C. 3RCsection ~
76
Which of the following is not true for the HART protocol ?
Answer
B. It uses no digital communication
77
‘The quality factor ‘Q’ and dissipation factor ‘D' :
Answer
C. Are related by Q=1/D
78
Which of the following features is not provided by a Field Bus?
Answer
A. Increase in Wiring
79
Pick up the appropriate word for a pointer movi ng over a scale :
Answer
C. Indicator
80
Which of the following device is used as a standard for calibrating pressure gauges?
Answer
A. Dead weight tester
81
Name the river, which is considered as the headwaters of Ganga, that originates from
‘Gaymukh’ in Gangotri Glacier :
Answer
A. Bhagirathi
82
The northern most range of Himalaya, consisting of the loftiest peaks with an average height
of 6000 metres, is knows as:
Answer
C. Himadri
83
Where is India’s only active voleano ‘Barren’ situated? :
Answer
B. Andaman and Nicobar Islands
84
Pick out the name of a Peninsular river of India from the following :
Answer
A. Tapti
85
Which is the most populated island among the islands of Lakshadweep?
Answer
D. Andrott
86
Choose the name of the wind that causes rain and thunderstorm in West Bengal and Assam
during summer season :
Answer
D. Kaal Baigakhi
87
Find out the most populated state in India :
Answer
B. Uttar pradesh
88
Name the state in India which has the lowest lite racy rate in India : :
Answer
C. Bihar
89
World Water day is celebrated every year on:
Answer
A. March 22
90
In which year the Kerala State Civil Supplies Corporation (KSCSC) was established ?
Answer
D. 1974
91
Name the author of ‘Ashtangahridaya’ :
Answer
A. Vaghbatta
92
On which day was Ayyankali, the social reformer born?
Answer
D. 1863 August 28 | :
93
The historic Quit India resolution was passed by All India Congress Committee on : |
Answer
B. 1942 August 8 |
94
Who was the founder of Forward Block? |
Answer
B. Subash Chandra Bose
95
Name the person who led the Ezhava memorial of 1896:
Answer
C. Dr. Palpu
96
Which is the longest river in Kerala?
Answer
C. Periyar
97
The Malayali actor who got best actor award in 51* National Film Awards is : |
Answer
C. Suraj Venjarammud
98
The venue of the world cup football 2014 18 «
Answer
B. Brazil
99
The Present Secretary General of U.N.O is from :
Answer
D. South Korea
100
The first Indian talkie feature film was screened on 14 March 1931. The name of that film
was:
Answer
A. Alam Ara
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