| Post Name | Technician Grade II (Electronics)-Kerala Co-operative Milk Marketing Federation Ltd |
|---|---|
| Question Paper Code | 010/2022 |
| Category Code | 075/2021 |
| Date of Test | 24 March 2022 |
| Medium of Question | ENGLISH |
| Exam Type | OMR Examination |
| Total Questions | 100 |
1
What is the shape of warning sign board?
Answer
D. Triangular
2
The classification of fire which involves metals are called :
Answer
C. Class D
3
Blanketing the fire with foam, sand etc. for stopping the supply of oxygen is called :
Answer
B. Smothering
4
The factors required of combustion are :
Answer
D. Fuel, heat and oxygen
5
Which of the following is used to form curves /loops in wires?
Answer
C. Round nose pliers
6
Which of the following tool is used to hold light weight and very small components and very
thin wires/strands?
Answer
B. Tweezers
7
The material which have 4 valence electrons are called :
Answer
B. Semi conductor
8
Insulators are also called?
Answer
D. Dielectrics
9
If the frequency of a sine wave is increased, then its wavelength will :
Answer
C. Decrease
10
An AC voltmeter will display :
Answer
A. RMS voltage
11
Which is the name of the motion of charged particles in any medium?
Answer
D. Current
12
The electrical property opposes the flow of electrons is called :
Answer
C. Resistance
13
Single strand wires are also known as :
Answer
A. Hook-Up wire
14
The purpose of SWG is :
Answer
C. Measure diameter of wire
15
A multimeter is used to measure :
Answer
D. All of the above
16
An ammeter is connected in βββββββββββwith a circuit to measure current :
Answer
A. Series
17
The correction of mechanical zero error of panel meter is done :
Answer
D. By adjusting the screw
18
A galvanometer can be converted into voltmeter by connecting a βββββββββββ with it :
Answer
A. High resistance in series
19
Generally batteries can be mainly classified into two categories, namely
Answer
B. Primary cells and secondary cells
20
The electrolyte used in lead acid cell is :
Answer
B. Sulphuric acid
21
The nominal voltage of a single cell in lead acid battery :
Answer
C. 2.0 V
22
Usually βββββββββββ is used to express the capacity of a battery :
Answer
A. Ampere Hour
23
What is the colour code of 1000 ohm resistor?
Answer
D. Brown, Black, Red
24
The amount of current flowing through a series connection or resistors :
Answer
Question Cancelled
25
When the current flowing through a 10K resistor is 5mA. The power is :
Answer
A. 250 mW
26
Unit of mutual inductance is :
Answer
A. Henry
27
The component which opposes any change in current is :
Answer
A. Inductor
28
βββββββββββ is a polarised capacitor.
Answer
D. Tantalum electrolytic capacitor
29
How electrical energy is stored in a capacitor?
Answer
B. As electrostatic field
30
The ability of material to retain its magnetism is called :
Answer
A. Retentivity
31
The capacitive reactance is βββββββββββ when the frequency is increased :
Answer
B. Decreased
32
The winding of a transformer to which electrical energy is applied is known as :
Answer
C. Primary winding
33
Which impurity is added to pure semiconductor to form N-type material?
Answer
C. Arsenic
34
What is the output pulse frequency of the full wave rectifier with input frequency of 50 Hz?
Answer
C. 100 Hz
35
What is the name of the process of converting AC into DC voltage?
Answer
B. Rectifying
36
Forbidden energy gap at 0Β°K for Si and Ge respectively are :
Answer
Question Cancelled
37
Which of the following will serve as a donor impurity in silicon?
Answer
D. Antimony
38
The temperature coefficient of an intrinsic semiconductor is :
Answer
A. Negative
39
Current flow in a semiconductor depends on the phenomenon of :
Answer
D. All of the Above
40
Rectification efficiency of a full wave bridge rectifier will be :
Answer
B. 81.2%
41
What is the meaning of first letter indicated in the transistor code number BC 107?
Answer
C. Silicon material used
42
When a reverse bias is applied to PN junction the width of the depletion layer?
Answer
B. Is Increased
43
Which of the following diode operated in reverse bias mode?
Answer
D. Zener
44
Which configuration of transistor amplifier is most commonly used in electronic circuits?
Answer
B. Common emitter configuration
45
How the negative feedback is called?
Answer
A. Degenerative feedback
46
What type of packaging is generally used to transistors utilized for low power amplification?
Answer
B. Plastic packaging
47
Which class of amplifier will give less distortion for input signals?
Answer
A. Class β A
48
What is the function of pin number 4 of the IC 555?
Answer
B. Reset
49
The medium doped region in a transistor is :
Answer
A. Collector
50
A common collector amplifier has the highest :
Answer
D. Current Gain
010/2022 8 A
51
The lowest input resistance is obtained in which transistor configuration :
Answer
C. Common Base
52
Transistor is
Answer
B. current controlled current device
53
A relaxation oscillator is one which :
Answer
D. produce non sinusoidal output
54
Ideal value of Common Mode Rejection Ratio in OP-Amp is :
Answer
C. infinity
55
What is the closed loop voltage gain of a inverting OP-amp circuit when feedback resistor
value is 10 Kο and input resistor value is 1Kο ?
Answer
B. β10
56
Which Multivibrator can be used for storing digital data?
Answer
C. Bistable Multivibrator
57
Which is the output pin number LM 741 OP_AMP?
Answer
A. Pin number 6
58
When a transistor work as an amplifier its operation is in :
Answer
B. Active Region
59
How many Op-Amps are fabricated inside the LM 324 IC pack?
Answer
C. Four Op-Amps
60
Bistable Multivibrator has :
Answer
B. Two Stable State
61
Which sensor detect the presence of object without any physical contact?
Answer
B. Proximity Sensor
62
Which one of the following is used for measuring torque ?
Answer
A. Strain gauge
63
What is the maximum forward gate current for BFW 10 FET?
Answer
C. 10 mA
64
The input impedance of IGBT is :
Answer
D. High
65
In UJT when the temperature increases the intrinsic stand of ratio is :
Answer
A. Remains the same
66
Which sensor can be used to stop the flow of a liquid into a pipe by means of an electric
current?
Answer
B. Solenoid valve
67
The desirable change over period for a UPS is :
Answer
Question Cancelled
68
Which type of PV cell has the highest efficiency?
Answer
D. Mono Crystalline Silicon
010/2022 10 A
69
Which technique is achieved by switching of the choppers in battery charging circuit?
Answer
B. Constant frequency
70
Which sensor is suitable for process temperature measurement of steel?
Answer
C. Thermocouple
71
Which material is coated as a thin layer on the PV cells to reduce surface reflection?
Answer
C. Silicon monoxide
72
What is the decimal number for the octal number (5642)8?
Answer
Question Cancelled
73
Which one of these ICs used as a Demultiplexer?
Answer
A. IC 74LS138
74
Which memory device is a volatile memory?
Answer
A. RAM
75
Which one of the following is a search engine?
Answer
D. Bing
76
Which protocol is used for transferring the file from one machine to another?
Answer
B. FTP
77
Which decimal number is equivalent to binary number 11110?
Answer
C. 30
78
A hard disk is divided into tracks, which are further subdivided into :
Answer
B. Sectors
79
In ink jet Printers the droplets of ink are deflected by :
Answer
A. Electrically charge plates
80
The effect due to which a semi conductor converts sunlight into emf is called :
Answer
C. Photo voltaic effect
81
How many connecting pins are there of USB (Universal Serial Bus) port?
Answer
C. 4
82
Which port is used to connect the HDD on the mother board?
Answer
A. IDE port
83
The process of converting an analog signal into a sequence of samples that are uniformly
spaced is called :
Answer
B. Sampling
84
How many I/O ports are there in Microcontroller 8051?
Answer
C. 4
85
What is the range of frequency for medium wave band?
Answer
Question Cancelled
86
Which type of antenna is used for point to point communication of radio waves?
Answer
D. Parabolic antenna
87
Which pin is marked as the master reset (RST) function in microcontroller IC 8051?
Answer
A. Pin No : 9
88
Which of given device used in speed control of a DC motor?
Answer
Question Cancelled
89
Which of the given logic family provide minimum power dissipation?
Answer
D. CMOS
90
One Kilo byte is equal to βββββββββββ bytes :
Answer
A. 1024
91
The internal RAM memory of 8051 micro controller is :
Answer
C. 128 bytes
92
How many instructions are available in the micro controller family instruction set?
Answer
Question Cancelled
93
Register that is used to hold the memory address of the next instruction to be executed is:
Answer
C. Program Counter
94
In which of the following modes of propagation the ionosphere acts as the reflecting surface of
the waves :
Answer
B. Sky wave
95
In an AM wave useful power is carried by :
Answer
B. Side bands
96
A K map (Karnaugh) is an abstract form of which diagram organized as a square matrix :
Answer
C. Venn diagram
97
Which device convert a physical quantity into electrical quantity?
Answer
D. Transducer
98
A binary decoder with four inputs will have :
Answer
A. 16 outputs
99
A microprocessor is a programmable logic device, 8085 microprocessor has :
Answer
A. 16 address lines
100
In how many different modes a universal shift register operates :
Answer
A. 4
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