| Post Name | Assistant Sub Inspector Trainee (Telecommunication) |
|---|---|
| Department | Kerala Police Service |
| Question Paper Code | 077/2025/OL |
| Category Code | 748/2024 |
| Date of Test | 16 July 2025 |
| Exam Type | Online Examination |
| Total Questions | 100 |
1
What is the objective of the SHE COHOROT 3.0 launched by the Punjab government?
Answer
B. Empower Women-Led startups
2
Which one of the following was the theme of the World environment Day 2024?
Answer
C. Land Restoration, Desertiļ¬cation and Drought Resilience
3
Who was recently appointed as the brand ambassador of FICCI FRAMES?
Answer
B. Ayushmann Khurrana
4
Which one of the following is a comprehensive scheme for prevention of traļ¬cking and rescue, rehabilitation and reintegration of victims?
Answer
D. Ujjwala
5
Which of the following Christian Missionary started ļ¬rst western education schools in Malabar?
Answer
A. The Basel Evangelical Mission
6
Which of the following is not a social reform movement in Kerala?
Answer
C. Self Respect Movement
7
Prathyaksha Raksha Daiva Sabha was a religious protest movement founded in 1909 by :
Answer
D. Poikayil Yohannan
8
What is the correct order in which the following terms are enshrined in the Preamble to the Constitution of India? (i) Liberty (ii) Equality (iii) Fraternity (iv) Justice Select the correct answer from the codes :
Answer
A. (iv), (i), (ii) and (iii)
9
The famous Malayalam drama "Ebrayakutti" was written by :
Answer
C. Kandathil Varghese Mappila
10
Who among the following was the editor of Mitavadi?
Answer
D. C. Krishnan
11
Which publication is attributed to Mar Kuriakose Elias Chavara among the following options :
Answer
C. Atmanutapam
12
A proclamation which was described by Gandhiji as a "Miracle of Modern Times":
Answer
A. Temple Entry Proclamation
13
The movement to boycott marakkuda (cadjan umbrella) was led by :
Answer
B. Parvathi Nenmenimangalam
14
Which country recently developed the world's ļ¬rst deep-sea radar that can detect high-ļ¬ying aircraft?
Answer
D. China
15
Article 78 of the Constitution deals with :
Answer
C. Prime Minister's duty regarding keeping the President informed about the government's decisions and policies
16
(i) Pampadi John Joseph founded the Cheramar Mahajan Saba (ii) He initiated the Sadhujan Dootan Magazine in 1919 (iii) He advocated for equal rights and opportunities for Dalits (iv) He organised Kallumala agitation Which of the above statements are not related to Pampadi John Joseph?
Answer
B. Only (iv)
17
India's ļ¬rst solar-powered village, Modhera, is situated in which state?
Answer
A. Gujarat
18
Under which Article the Supreme Court of India exercises advisory jurisdiction?
Answer
B. Article 143
19
Who among the following presides over a joint sitting of the two Houses of Parliament?
Answer
D. Speaker of Lokh Sabha
20
Who is the chairperson of the Economic Intelligence Council (EIC) of India?
Answer
A. Finance Minister
21
If a superheterodyne receiver is tuned to 700 kHz and the local oscillator is set to 1200 kHz, then the image frequency is
Answer
C. 1700 kHz
22
The modulation index (Ī²) in FM is deļ¬ned as the ratio of
Answer
B. Maximum frequency deviation to modulating frequency
23
Ground-wave (surface-wave) propagation is predominantly :
Answer
D. Vertically polarized
24
An AM transmitter radiates 200 W of carrier power and is modulated with a sine wave at a modulation index of 0.5. What is the total side band power?
Answer
A. 25 W
25
Which block in an FM receiver performs frequency-to-voltage conversion?
Answer
B. Discriminator
26
A communication system uses FM with a peak deviation of 5 kHz. If the modulating signal is a 3 kHz sine wave, what should be the minimum bandwidth allocated for the channel?
Answer
D. 16 kHz
27
Which of the following is not used for FM demodulation?
Answer
A. Envelope detector
28
At night, AM radio stations operating in the medium frequency band (300 kHz - 3 MHz) can be received at distances far beyond their usual daytime range. Which phenomenon makes this possible?
Answer
C. Sky wave reļ¬ection from the ionosphere
29
What is the standard intermediate frequency (IF) used in FM radio receivers?
Answer
B. 10.7 MHz
30
The ability of a superheterodyne receiver to diļ¬erentiate between closely spaced stations on the frequency spectrum is mainly due to :
Answer
D. Sharp IF ļ¬ltering
31
In a TV system, what does the term Y in the equation, Y = 0.3R+0.59G+0.11B represent?
Answer
A. Luminance
32
Which signal is added in a color TV transmission to help synchronize the color decoder?
Answer
B. Burst signal
33
In satellite communication, a transponder primarily :
Answer
C. Ampliļ¬ers and shifts frequency
34
In an interlaced scanning video system transmitting 60 ļ¬elds per second, how many complete frames are displayed each second?
Answer
D. 30 Hz
35
In a half-wave dipole antenna, the current distribution along the length is :
Answer
C. Maximum at the centre, zero at ends
36
The characteristic impedance of a Coaxial cable of length 1m is 50Ī©. What is the characteristic impedance of the same cable of length 100 m?
Answer
A. 50 Ī©
37
Which of the following is not true about VHF propagation?
Answer
C. VHF signals are eļ¬ciently reļ¬ected by the ionosphere
38
An equalizing pulse train occurs at what interval?
Answer
D. During vertical blanking interval
39
Which one is a block coding technique used in digital communications?
Answer
C. Hamming Code
40
How is video information modulated in a negative modulation system used in analog TV?
Answer
A. White level lowers the carrier amplitude
41
Space wave propagation occurs in which of the following regions?
Answer
B. Troposphere
42
Fluctuation in the received signal strength at the receiver or a random variation in the received signal is known as
Answer
D. Fading
43
Which law is used to calculate the Maximum Usable Frequency (MUF) for sky wave propagation between two distant points on Earth?
Answer
C. Secant Law
44
Assertion (A) : Modulation is essential for transmitting low-frequency signals over long distances. Reason (R) : Low-frequency signals can travel longer distances without attenuation or interference. Select the correct answer code.
Answer
C. (A) is true, but (R) is false
45
The type of modulation in which a voltage proportional to the modulating signal is added to the carrier amplitude is
Answer
A. Amplitude Modulation
46
A Frequency Modulated (FM) signal has a maximum frequency deviation of 75 kHz and the highest modulating signal frequency is 15 kHz. What is the approximate bandwidth of the FM signal according to Carson's rule?
Answer
B. 180 KHz
47
The maximum directive gain of an antenna is called
Answer
C. Directivity
48
Which type of antenna is commonly used for television reception?
Answer
D. Yagi-Uda Antenna
49
Why can an antenna be called a transducer?
Answer
C. Because it converts electrical signals into electromagnetic waves and vice versa
50
Quantization error in an Analog-to-Digital Converter (ADC) is :
Answer
A. The diļ¬erence between the actual analog input and the quantized digital output
51
What is the main purpose of multiplexing in communication systems?
Answer
C. To allow multiple signals to share a single communication channel
52
In Pulse Width Modulation (PWM), the information is encoded in:
Answer
B. The duration of the pulse
53
Given below are the two statements : Statement 1 : A cell corresponds to the covering area of one transmitter or a small collection of transmitters. Statement 2 : In a cellular system, the covering area of an operator is divided into cells In the light of the above statements choose the correct answer from the option given below
Answer
A. Both statement 1 and statement 2 are True
54
In a GSM system Radio Link management is performed by
Answer
C. Base Transceiver Station
55
FM radio broadcasting typically operates in which frequency range?
Answer
A. 88 MHz - 108 MHz
56
Identify the optical test equipment that sends laser pulses through a ļ¬ber and analyses the reļ¬ected signals to determine the location and nature of faults such as bends, breaks, and splicing losses
Answer
C. Optical Time Domain Reļ¬ectometer
57
SMPS stands for :
Answer
B. Switched Mode Power Supply
58
The power supply failure due to voltage drop that is beyond the regulating capacity of UPS is known as
Answer
A. Brown-out
59
The E-Governance project approved by Union Government of India which comprising of 27 Mission Mode Projects (MMPs) that marks the origin of E-Governance in India is
Answer
B. National e-Governance Plan
60
Which one of the following statements are/is true with reference to Indian Wireless Telegraphy Act, 1933? (i) The telegraphy authority constituted under the Indian Telegraph Act, 1885, shall be the authority competent to issue licences to possess wireless telegraphy apparatus under this Act. (ii) Any person in India can possess wireless telegraphy apparatus without a license issued under this Act.
Answer
A. Only (i)
61
An ideal voltage source has ________ internal resistance
Answer
A. Zero
62
Which of the following is a best conductor of electricity?
Answer
C. Copper
63
The voltage drop per ampere-meter of an aluminum conductor is higher as compared to a copper conductor of the same size due to its higher
Answer
B. Resistivity
64
Which of the following materials possess least resistivity?
Answer
D. Silver
65
Air gap in the iron core of an inductor prevents
Answer
B. Hysteresis loss
66
Sparking occurs when a load is switched oļ¬ because the circuit has
Answer
C. Inductance
67
The voltage induced in a loop of wire rotating in a strong and steady magnetic ļ¬eld is
Answer
D. AC
68
The power factor of a purely resistive circuit is
Answer
A. Unity
69
The input of an ac circuit having p.f. of 0.8 lagging is 30 KVA. The power drawn by the circuit is __________ KW.
Answer
A. 24 KW
70
Slipring induction motor is preferred over sq. cage induction motor where
Answer
B. High starting torque is required
71
The ratio of active power to apparent power is known as
Answer
D. Power factor
72
Metallic casing of electrical apparatus always earthed
Answer
C. To ensure operators safety
73
Supply point to a consumer is taken at
Answer
D. The output side of supplier fuse
74
For an ideal transformer, input VA=output VA, hence current are
Answer
C. Inverse ratio of voltage transformation ratio
75
Which type of core is used for high frequency transformer?
Answer
C. Air core
76
Which of the lamp has more resistance?
Answer
B. 25 W, 250 V lamp
77
Two lamps each rated 60 W 230 V when connected in parallel across 230 V supply will consume
Answer
C. 120 W
78
What is the voltage regulation of an ideal d.c. generator?
Answer
D. Zero
79
Ward-Leonard system of speed control is most suited for
Answer
B. Constant speed operation
80
Reverse current braking commonly used in
Answer
A. Elevators
81
Which of the following computer is used for bulk data processing?
Answer
B. Mainframe computer
82
Which among the following was used in the ļ¬rst generation of computers?
Answer
C. Vacuum tube
83
Which of the following CPU register contains the address of next instruction to be processed?
Answer
B. Program counter
84
Which of the following technology is used in a Drum Scanner?
Answer
A. Photo Multiplier Tube
85
Which of the following peripheral device can be connected to computer using ps/2 port?
Answer
D. Mouse
86
Which of the following Monitor uses an electron gun to form images?
Answer
D. CRT
87
Which of the following is an impact printer?
Answer
B. Dot Matrix Printer
88
What is the function of SATA port in motherboard?
Answer
C. To connect Hard disk and Motherboard
89
Arrange the following computer memory in increasing order of data access time (from fastest to slowest) (i) Cache memory (ii) RAM (iii) Registers (iv) Hard Disk
Answer
A. (iii), (i), (ii), (iv)
90
Which of the following processor is designed for servers and workstations?
Answer
C. Xeon
91
What is the shortcut key to open Task Manager in Windows?
Answer
A. Ctrl+Shift+Esc
92
What is the use of "Safe Mode" in Windows?
Answer
C. To start Windows with bare essential services and drivers
93
What is the use of Mail merge feature in MS Word?
Answer
B. To create personalized letters to multiple recipients
94
What is the shortcut key to Align text/image to Center in MS Word?
Answer
C. Ctrl+E
95
Which Tab of MS word has "Protect Document" option?
Answer
A. File
96
Which of the following is not true about subnetting in computer network?
Answer
C. Bits are borrowed from network portion
97
What is the purpose of DHCP server?
Answer
D. To provide IP conļ¬guration
98
Which device is used to connect multiple computers in a Local Area Network and forward data packets based on MAC address?
Answer
C. Switch
99
What is the full form of DNS?
Answer
B. Domain name system
100
Which of the following is the ļ¬rst step in the operation of a search engine?
Answer
A. Web crawling
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