Jkp Constable Telecommunication Telecommunication Mcqs Jkp Constable (1089 MCQs)

Question 1021 Discuss

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To increase the current carrying capacity while avoiding thick, stiff wires, electricians utilize:

A

Solid core wire

B

Stranded wire

C

Aluminum only wire

D

Uninsulated wire

Answer & Explanation

Correct Option: B

Stranded wire bundles multiple thin wires together, providing high flexibility combined with a large overall cross-sectional area for high current.

Question 1022 Discuss

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A parabolic dish antenna operates as an extremely high-gain reflector. Where must the feed element (like a horn antenna) be placed for optimal operation?

A

At the outer rim of the dish

B

Exactly at the vertex of the parabola

C

At the focal point of the parabola

D

At a distance of one wavelength behind the dish

Answer & Explanation

Correct Option: C

Due to parabolic geometry, all parallel incoming waves reflect to converge precisely at the focal point, making it the perfect location for the receiver feed.

Question 1023 Discuss

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In a database management system (DBMS), the acronym ACID refers to properties ensuring reliable transaction processing. What does the 'C' stand for?

A

Concurrency

B

Consistency

C

Commit

D

Control

Answer & Explanation

Correct Option: B

ACID stands for Atomicity, Consistency, Isolation, Durability. Consistency ensures a transaction only brings the database from one valid state to another.

Question 1024 Discuss

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The difference between True North and Magnetic North is known technically as:

A

Magnetic Dip

B

Magnetic Declination

C

Magnetic Inclination

D

Magnetic Deviation

Answer & Explanation

Correct Option: B

Magnetic Declination (or magnetic variation) is the angle on the horizontal plane between magnetic north (direction a compass points) and true north.

Question 1025 Discuss

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If a telecommunication line exhibits high attenuation at higher frequencies, what type of equalizer circuit is best deployed to correct the frequency response?

A

Low-pass filter

B

High-pass filter

C

Band-stop filter

D

Attenuator

Answer & Explanation

Correct Option: B

To compensate for high-frequency loss, a high-pass filter (acting as an equalizer) is used to attenuate lower frequencies, flattening out the overall response.

Question 1026 Discuss

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Which logic gate outputs TRUE only when the two inputs are distinct from each other?

A

AND

B

OR

C

XOR

D

XNOR

Answer & Explanation

Correct Option: C

The Exclusive-OR (XOR) gate returns a '1' (TRUE) if and only if the inputs are different (e.g., 1 and 0, or 0 and 1).

Question 1027 Discuss

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In AM broadcasting, the intermediate frequency (IF) standard for receivers is typically:

A

455 kHz

B

10.7 MHz

C

38 MHz

D

88 MHz

Answer & Explanation

Correct Option: A

Almost all standard AM superheterodyne radio receivers use 455 kHz as the fixed Intermediate Frequency (IF). FM generally uses 10.7 MHz.

Question 1028 Discuss

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What happens when an anti-virus software relies exclusively on 'Signature-based' detection?

A

It can detect completely new, unknown viruses based on behavior

B

It compares file codes against a known database of threats

C

It prevents users from accessing unauthorized networks

D

It physically repairs damaged hardware sectors

Answer & Explanation

Correct Option: B

Signature-based detection looks for specific byte-patterns (signatures) of known malware. It is highly accurate but cannot detect zero-day (brand new) threats.

Question 1029 Discuss

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In a 3-phase system, if the line voltage is 400V, what is the approximate phase voltage in a Star (Y) connected configuration?

A

400 V

B

230 V

C

692 V

D

133 V

Answer & Explanation

Correct Option: B

In a star connection, Line Voltage = Phase Voltage * sqrt(3). Phase Voltage = 400 / 1.732 approximately equals 230 V.

Question 1030 Discuss

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Which of the following is considered the heart of a microprocessor system, coordinating the sequence of operations?

A

ALU

B

Registers

C

Control Unit

D

Cache Memory

Answer & Explanation

Correct Option: C

The Control Unit generates timing and control signals, directing the flow of data through the ALU, registers, and memory elements.

jkp constable telecommunication

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Practice Questions

To increase the current carrying capacity while avoiding thick, stiff wires, electricians utilize:

Answer & Explanation

A parabolic dish antenna operates as an extremely high-gain reflector. Where must the feed element (like a horn antenna) be placed for optimal operation?

Answer & Explanation

In a database management system (DBMS), the acronym ACID refers to properties ensuring reliable transaction processing. What does the 'C' stand for?

Answer & Explanation

The difference between True North and Magnetic North is known technically as:

Answer & Explanation

If a telecommunication line exhibits high attenuation at higher frequencies, what type of equalizer circuit is best deployed to correct the frequency response?

Answer & Explanation

Which logic gate outputs TRUE only when the two inputs are distinct from each other?

Answer & Explanation

In AM broadcasting, the intermediate frequency (IF) standard for receivers is typically:

Answer & Explanation

What happens when an anti-virus software relies exclusively on 'Signature-based' detection?

Answer & Explanation

In a 3-phase system, if the line voltage is 400V, what is the approximate phase voltage in a Star (Y) connected configuration?

Answer & Explanation

Which of the following is considered the heart of a microprocessor system, coordinating the sequence of operations?

Answer & Explanation

jkp constable telecommunication

Topics

Browse Topics

Practice Questions

To increase the current carrying capacity while avoiding thick, stiff wires, electricians utilize:

Answer & Explanation

A parabolic dish antenna operates as an extremely high-gain reflector. Where must the feed element (like a horn antenna) be placed for optimal operation?

Answer & Explanation

In a database management system (DBMS), the acronym ACID refers to properties ensuring reliable transaction processing. What does the 'C' stand for?

Answer & Explanation

The difference between True North and Magnetic North is known technically as:

Answer & Explanation

If a telecommunication line exhibits high attenuation at higher frequencies, what type of equalizer circuit is best deployed to correct the frequency response?

Answer & Explanation

Which logic gate outputs TRUE only when the two inputs are distinct from each other?

Answer & Explanation

In AM broadcasting, the intermediate frequency (IF) standard for receivers is typically:

Answer & Explanation

What happens when an anti-virus software relies exclusively on 'Signature-based' detection?

Answer & Explanation

In a 3-phase system, if the line voltage is 400V, what is the approximate phase voltage in a Star (Y) connected configuration?

Answer & Explanation

Which of the following is considered the heart of a microprocessor system, coordinating the sequence of operations?

Answer & Explanation

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