Machine Guns and Their Mechanics Quiz

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Questions and Answers

What is the maximum free elevation capability of the weapon?

  • 22 degrees (correct)
  • 11 degrees
  • 5 degrees
  • 360 degrees

The flash suppressor minimizes smoke produced by the weapon.

False (B)

What is the primary cause of muzzle flash?

Flammable gases produced by burning propellant combining with atmospheric oxygen.

What is a key characteristic of machine guns?

<p>High, sustained rate of fire (D)</p> Signup and view all the answers

The weapon's tripod allows for a full ______ degree free traverse.

<p>360</p> Signup and view all the answers

What should be done to avoid dust from rising at the gun position?

<p>Sprinkle water (A)</p> Signup and view all the answers

The Gatling Gun was the first fully automatic machine gun.

<p>False (B)</p> Signup and view all the answers

Match the following parts with their potential issue:

<p>Firing pin = Breakage due to high rate of fire or mishandling Barrel = Overheating due to high rate of fire Gas regulator assembly = Minimizes some flash caused by exhaust gas Hydrocarbons = Cause smoke due to burning</p> Signup and view all the answers

What principle did the Maxim machine gun use to operate?

<p>recoil principle</p> Signup and view all the answers

How many belts can the weapon continuously fire before the barrel should be changed?

<p>Four (A)</p> Signup and view all the answers

The .303 Vickers MMG was cooled by a water jacket containing ______ liters of water.

<p>4.1</p> Signup and view all the answers

Match the machine gun with its description:

<p>Gatling Gun = Early multi-barrel, hand-cranked machine gun Maxim Machine Gun = First automatic machine gun using recoil principles .303 Vickers MG = British medium machine gun, water-cooled MG 34 = First General Purpose Machine Gun</p> Signup and view all the answers

What was the rate of fire of the .303 Vickers Medium Machine Gun (MMG)?

<p>400-500 rounds per minute (A)</p> Signup and view all the answers

The MAG-58 is only used by Belgium, Sweden and the US.

<p>False (B)</p> Signup and view all the answers

In what year was the concept of the General Purpose Machine Gun (GPMG) originated?

<p>1934</p> Signup and view all the answers

What is the total weight of the gun, according to the provided information?

<p>24.7 kg (B)</p> Signup and view all the answers

The effective range of this weapon is 3900 meters.

<p>False (B)</p> Signup and view all the answers

How many people are required to carry the weapon, according to the text?

<p>three</p> Signup and view all the answers

The weapon can withstand high temperatures and cools with the surrounding ______.

<p>air</p> Signup and view all the answers

What is the weight of the tripod?

<p>14.2 kg (B)</p> Signup and view all the answers

The barrel should be changed after firing two belts consecutively.

<p>False (B)</p> Signup and view all the answers

Match the rate of fire with its description:

<p>Cyclic = 600 to 1000 rounds/minute Normal = 100 rounds/minute</p> Signup and view all the answers

What does the residual descent velocity at 3900m imply about the bullet?

<p>It is lethal</p> Signup and view all the answers

Which of the following is NOT a reason for the heavy volume of fire capability?

<p>Lightweight construction (B)</p> Signup and view all the answers

The open sight enables accurate aiming up to ______ m.

<p>1800</p> Signup and view all the answers

How many 7.62mm MAG-58 guns are authorized per Rifle Company?

<p>2 (C)</p> Signup and view all the answers

The 7.62mm MAG-58 is designed to only be used as a Light Machine Gun (LMG).

<p>False (B)</p> Signup and view all the answers

What type of breech does the 7.62mm MAG-58 fire from?

<p>open breech</p> Signup and view all the answers

The gas regulation system of the 7.62mm MAG-58 is controlled by a ______.

<p>regulator</p> Signup and view all the answers

Match the regulator setting to its corresponding gas flow and firing rate:

<p>Regulator set at 0 = Maximum gas flow, 1000 rounds/min Regulator set at 6/7 = Typical setting, 750 rounds/min Regulator set at 9 = Minimum gas flow</p> Signup and view all the answers

What is the primary reason the 7.62mm MAG-58 fires from an open breech?

<p>To prevent cook-off during prolonged firing (C)</p> Signup and view all the answers

The safety mechanism on the 7.62mm MAG-58 allows the primer to strike before the locking of the breech is complete.

<p>False (B)</p> Signup and view all the answers

What type of belt is used to feed ammunition into the 7.62mm MAG-58?

<p>disintegrating link belt</p> Signup and view all the answers

The ammunition for the 7.62mm MAG-58 is housed in ______ sealed boxes.

<p>hermetically</p> Signup and view all the answers

What is the purpose of flash suppressors on the 7.62mm MAG-58?

<p>To reduce flash at the muzzle end (A)</p> Signup and view all the answers

What is the primary purpose of the mounting tripod 7.62 mm L4 A1?

<p>To offer stability and strength to the gun. (A)</p> Signup and view all the answers

The Sight Unit -102 A/B is primarily used with the 7.62 mm machine gun.

<p>False (B)</p> Signup and view all the answers

The tripod feet of the mounting tripod 7.62 mm L4 A1 are designed to grip the ground. What does this feature prevent?

<p>unwanted movement</p> Signup and view all the answers

The Sight Unit -102 A/B has an advantage compared to the earlier model C-2, because it is calibrated in ______.

<p>degrees</p> Signup and view all the answers

Match the Gun Machine types with their primary role

<p>Gun Machine (MAG) 7.62mm 2A1 = General Ground Role Gun Machine (MAG) 7.62mm 4A = General Ground Role Gun Machine (MAG TK-71) 7.62mm 5A = Tanks Role Gun Machine (MAG TK-71) 7.62mm 6A = Ground and Tank Role</p> Signup and view all the answers

What is a key difference between Sight Unit -102A and -102B?

<p>102A has six spare bulbs, while 102B has twelve. (D)</p> Signup and view all the answers

The Aiming Post and Lamp is used to provide stability to the tripod stand.

<p>False (B)</p> Signup and view all the answers

Besides the number of spare bulbs, what other feature does Sight Unit 102B has in addition to 102A?

<p>leads covered with an outer Rexene cover</p> Signup and view all the answers

The mounting tripod 7.62 mm L4 A1 has its own ______ incorporated.

<p>recoil buffer unit</p> Signup and view all the answers

Which Gun Machine is specifically mentioned for use only in tanks?

<p>Gun Machine (MAG TK-71) 7.62mm 5A (C)</p> Signup and view all the answers

Flashcards

Machine Gun

A machine gun that fires a high volume of ammunition continuously.

Maxim Machine Gun

The first automatic machine gun, utilizing recoil to operate, featuring a water-cooled jacket around the barrel.

Vickers Medium Machine Gun (MMG)

A British machine gun firing .303 inch rounds at a rate of 400-500 rounds per minute, utilizing water-cooling.

Medium Machine Gun (MMG)

A type of machine gun that is heavier and often larger than a light machine gun, typically mounted on a tripod.

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General Purpose Machine Gun (GPMG)

A machine gun that can be used as both a light machine gun and a medium machine gun by changing its mounting system.

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MAG-58 (Materialized Appui General)

A Belgian-made machine gun designed by Ernest Vervier, functioning as both a light machine gun and a medium machine gun.

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MG 34

The introduction of the General Purpose Machine Gun (GPMG) concept, which transformed machine gun usage.

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Light Machine Gun (LMG)

A machine gun that is primarily used in infantry assault, typically lighter and mounted on a bipod.

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Rapid Fire Rate

The weapon can fire 200 rounds per minute. This can be achieved by pressing the trigger for a short duration with pauses in between.

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Flexibility

The weapon can be quickly switched between different types of targets. This is achieved by having day/night firing capability and switching between ground and air roles.

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Flash

The bright light produced when a gun fires, usually caused by burning propellant gases.

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Smoke

The smoke produced when a gun fires, usually caused by burning hydrocarbons like oil or old ammunition.

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Sound/Muzzle Blast

The loud noise produced when a gun fires, caused by high-pressure gases escaping the muzzle.

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Breakage of Parts

The risk of weapon parts breaking due to high rate of fire or mishandling, especially smaller parts like the firing pin, ejector, and extractor.

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Overheating of Barrel

The barrel of a gun can overheat due to prolonged and rapid firing. To avoid damage, the barrel should be changed after firing four belts continuously.

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What is the main role of the Gun Machine (MAG) 7.62mm?

The Gun Machine (MAG) 7.62mm is a versatile weapon designed to operate as both a Light Machine Gun (LMG) and a Medium Machine Gun (MMG). In India, it's typically fired from a tripod.

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How does the MAG prevent 'cook-off' during continuous firing?

The MAG is designed to fire from an open breech, which prevents the build-up of pressure and potential 'cook-off' during extended firing.

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How does the MAG 7.62mm control its rate of fire?

The MAG regulates its rate of fire using a gas system, where a regulator controls the amount of gas entering the cylinder. This ensures a controlled firing rate.

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What ensures the safe firing operation of the MAG?

The MAG features a mechanical safety mechanism that firmly locks the breech even during vibrations. This prevents the primer from firing before the breech is securely locked.

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How does the MAG protect its gears and internal parts from dust?

The MAG's design incorporates a dust cover that automatically opens and closes during use. This helps protect the internal mechanism from dust and debris.

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How does the MAG minimize flash during firing?

The MAG employs flash suppressors and gas regulators to reduce the muzzle flash and flash produced at the gas regulator.

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How is the MAG's ammunition stored and fed?

The MAG's ammunition is stored in hermetically sealed boxes, which contain 235 rounds linked together in a disintegrating belt.

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What is the MAG 7.62mm 2A?

The MAG 7.62mm 2A is a variant of the Gun Machine (MAG) 7.62mm that is used in India.

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How does the MAG 7.62mm fire?

The Gun Machine (MAG) 7.62mm is a fully automatic weapon, meaning it continuously fires as long as the trigger is held down.

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How is the MAG cooled?

The MAG is air-cooled, meaning its barrel is cooled by air circulation. This allows for sustained firing without overheating.

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What is the weight of the weapon?

The total weight of this weapon is 24.7 kg, with a gun weight of 10.5 kg and a tripod weight of 14.2 kg. It can be carried by a team of three soldiers over a distance.

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7.62 mm L4 A1 Mounting Tripod

A tripod designed for the 7.62 mm L4 A1 gun, providing stability and adjustability for different firing positions.

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What is the maximum range of the weapon?

The weapon's maximum range is 3900 meters.

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Adjustability of the 7.62 mm L4 A1 Tripod

The 7.62 mm L4 A1 mounting tripod allows for adjusting the gun's elevation to different heights, useful for both ground and air defense.

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Recoil Buffer in the 7.62 mm L4 A1 Tripod

The 7.62 mm L4 A1 mounting tripod incorporates a buffer system to absorb the recoil of the gun.

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What is the effective range of the weapon?

The weapon's effective range is 1800 meters.

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Is the bullet lethal at the maximum range?

The weapon's bullet maintains a lethal velocity throughout its trajectory, even at its maximum range of 3900 meters.

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Tripod Feet Design for Stability (7.62 mm L4 A1)

The tripod feet have special features to prevent slipping and ensure the gun remains stationary during firing.

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How does the weapon achieve accuracy at long ranges?

The tripod mount and its components provide stability, allowing for precise fire at long ranges. The open sights enable accurate aiming up to 1800 meters.

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Sight Unit - 102 A/B (81 mm Mortar)

A sight unit designed for use with the 81 mm Mortar, allowing accurate aiming in various weather conditions.

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Difference between 102A and 102B Sight Units

The 102A and 102B sight units differ in the number of spare bulbs provided.

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How does the weapon achieve a heavy volume of fire?

The weapon's belt-fed design enables continuous firing with little interruption. The belt links can be easily connected or disconnected to adjust the belt's length.

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Why does the weapon have a high rate of fire?

The robust parts of the weapon lead to fewer stoppages during firing, contributing to a sustained fire rate.

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102B Sight Unit Lead Cover

The 102B Sight Unit features a protective cover over its leads.

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Aiming Post and Lamp (Sight Unit)

Used to maintain elevation and deflection of the sight unit during aiming.

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What is the benefit of the spare barrel?

A spare barrel is provided to extend the firing time. After firing four belts consecutively, the barrel is replaced.

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How does the weapon cope with high temperatures from continuous firing?

The weapon's heavy barrel withstands high temperatures and cools efficiently with surrounding air, allowing for prolonged firing.

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Gun Machine (MAG) 7.62mm 2A1

A 7.62 mm machine gun commonly used in infantry units.

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What are the different firing rates of the weapon?

The weapon's rate of fire is adjustable based on the gas regulator setting. It can fire at a cyclic rate of 600 to 1000 rounds per minute, or a normal rate of 100 rounds per minute.

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Gun Machine (MAG TK-71) 7.62mm 6A

A 7.62 mm machine gun designed for armored vehicles.

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