Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

heavy > 81mm MCQ > Flashcards

81mm MCQ Flashcards

1
Q

The ——— forms a platform for the mortar and takes the shock of recoil on firing

A

Base plate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

It is triangular in shape and on one end it has got a ——- for its ——-

A

Handle, carriage

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

On the bottom there is an iron frame which is to strengthen it and there are ——— also which prevent it from slipping

A

Three spikes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

In the centre of the base plate there is a ——- to lock the breach piece of the barrel

A

Rotating socket

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

The handle of the rotating socket and ——— of the barrel should be in one line

A

Upper white line

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Its weight is ——— and is carried by number 1 of the detachment

A

15.5 kilograms

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Barrel is a steel tube with a ——- of 81 millimeter.

A

Bore

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

The forward end is known as muzzle which is —— thick and is thicker than rest of the barrel

A

1.5 centimeter

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

At the rear end of the barrel there are ——- cut in on which breach block is locked

A

Threads

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

From the threads —— towards the muzzle the outer surface of barrel is thicker than the rest of the barrel and this gradually decreases

A

46.5 centimeter

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

At the forward end of this thicker portion, —— is fixed and this thicker portion prevents the bipod from ———-

A

Bipod, sliding down

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Ion the upper surface of the barrel a —— is painted which is used in its general ———

A

White line, alignment

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

While assembling the barrel, this line, fire control knob ——- cut made in the clamping collar should be in one line

A

3.3 cm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

The total length of the barrel is ——- weight is ———

A

1.55 meters, 14.5 kilograms

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

In the centre and slightly above the breach block ——- is fixed

A

Fire control knob

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Firing pin is ——- long and is moved in and out with the help of firing control knob

A

10 centimeter

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

In the centre of left leg there is an ——— which is connected to connecting rod which moves through the ———-

A

Adjusting nut, connecting rod locking hand wheel

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

In between the left and right leg there is an ——- with the left leg. There is a ——- to tie both the legs during its carriage

A

Iron chair, leather strap

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

——— is attached to clamping collar assembly

A

Shock absorber system

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

The weight of bipod is ———

A

13 kilograms

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

The sight is issued with an additional part which is known as ——— the sight cannot be fixed with the mortar without the ———-

A

Sight adopter, adopter

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

This lever locks the adopter with the bracket of ———

A

Bipod

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Sight axle fits in this way. It has two cuts in which ——— fits in

A

Sight axle projections

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Collimeter sight can be moved up and down and on its right it has got a ——

A

Collimeter lock

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Though the adopter can also be fitted in the ——- but it shoulf never be pit in —— as it will damage the sight
Sight box, sight box
26
The deflection on this sight is cut in mills from ——
0 to 6400
27
On major scale every line is at an interval of ———
100 mills
28
Every —— line has figure written on it which shows ———
4th line, multiples of 100
29
On deflection micrometer scale mills are cut from ——- at an interval of ——
0 to 100, 1 mill
30
Every ——— is slightly bigger and every tenth line has got a figure written
Fifth line
31
If given deflection is less than —— then it should only be applied on ———
100, micrometer scale
32
Deflection is increased by moving the micrometer scale in ———
Clockwise direction
33
Elevation is also in mils and on elevation major scale it is marked from ———-
800 to 1600 mills
34
The line above ——- show as elevation of 700 mills
800 mills
35
On elevation micrometer scale elevation is cut from ——- at an interval of 1 mill
0 to 100
36
Every —— line is slightly bigger and every tenth line is marked with a figure. Elevation is applied by ———
Fifth line, elevation hand knob
37
——— is made of steel with which a strap is attached for carriage
Sight case
38
Inside the case there is a wooden frame in which there is a cut for ——- then there are three cuts for placing of ——-
Sight axle, three bubbles
39
Then there is a place for sight adjusting and ———
Light instruments tube
40
Mortar is the result of the need for a weapon that will reach into ——- and area in defilade from the fire of ———-
Field fortifications, flat trajectory weapons
41
Mortar along with its ammunition can easily be carried into action in mortar transport ( ——- and ——) right up to the mortar position if site permit
1x 1/4 ton jeep, 3/4 ton trucks
42
The crew should easily be able to carry the mortar over long distances of ——-
15 to 20 miles
43
Personnel of the ———- will be required to manhandle the ammunition
Rifle companies
44
In hilly terrain or thick jungles, ——- can also be used to transport the weapon and its ammunition
Mules
45
One mule load of ——-
160 pounds
46
81 millimeter mortar ( complete with accessories-
1 mule
47
Pouch ammunition of ——- in boxes of 6 rounds ( one box weighs ——)
60 bombs, 80 pounds
48
One mule will carry 2 boxes i.e —— Due to distinctive ——- and ——- produced while firing 81 mm mortar can easily be detected by the enemy if mortar is not sited behind cover Moreover an be easily located by —— and —— equipment even if sited behind high cover
12 rounds Sound, flash Radar, sound ranging
49
The mortar can fire more than ——— but owing to limited ammunition supply it is not practicable to sustain such a high rate of fire
30 rounds per minute
50
It is evident from the above that mortars should be used very discriminately in battle and arrangements for its ——— should be made before hand in an operation
Ammunition supply
51
The mortar can engage targets within the radius of ——— at widely separated range targets with little delay
6400 mills
52
With this weapon seven charges can be used thereby getting the minimum and maximum range which is ——, ——
100 meter, 4550 meter
53
It bursts into numerous small jagged fragments approximately—— and travels all round with the the speed of ————
1500, 300 feet/ section
54
These fragments may be expected to cause casualty up to a distance of ——— in all directions from the point of bursts
100 meters
55
Two types of ammunition cam be fired with this weapon i.e ——- and ——
High explosive, smoke
56
With both type of ammunition there is no variation in the range and maximum range i.e ——— meters can be achieved
4550
57
Under favourable weather conditions the mortar can produce an effective smoke screen for a limited period if fired smoke bomb ———- which has a fuze ———- filled with white phosphorus
M57D, V-19 PA
58
One bomb in favourable weather conditions can make a screen of ———- in length and for ———-
40-50 meters, 15-20 seconds
59
The availability of ——- with the mortar sight enable the weapon to engage those targets at night and in reduce visibility which are recorded during day light
Light instruments
60
Mortar is the result of the need for a weapon that will reach into ——- and area in defilade from the fire of ———-
Field fortifications, flat trajectory weapons
61
Mortar along with its ammunition can easily be carried into action in mortar transport ( ——- and ——) right up to the mortar position if site permit
1x 1/4 ton jeep, 3/4 ton trucks
62
The crew should easily be able to carry the mortar over long distances of ——-
15 to 20 miles
63
Personnel of the ———- will be required to manhandle the ammunition
Rifle companies
64
In hilly terrain or thick jungles, ——- can also be used to transport the weapon and its ammunition
Mules
65
One mule load of ——-
160 pounds
66
81 millimeter mortar ( complete with accessories-
1 mule
67
Pouch ammunition of ——- in boxes of 6 rounds ( one box weighs ——)
60 bombs, 80 pounds
68
One mule will carry 2 boxes i.e ——
12 rounds
69
The mortar can fire more than ——— but owing to limited ammunition supply it is not practicable to sustain such a high rate of fire
30 rounds per minute
70
It is evident from the above that mortars should be used very discriminately in battle and arrangements for its ——— should be made before hand in an operation
Ammunition supply
71
The mortar can engage targets within the radius of ——— at widely separated range targets with little delay
6400 mills
72
With this weapon seven charges can be used thereby getting the minimum and maximum range which is ——, ——
100 meter, 4550 meter
73
It bursts into numerous small jagged fragments approximately—— and travels all round with the the speed of ————
1500, 300 feet/ section
74
These fragments may be expected to cause casualty up to a distance of ——— in all directions from the point of bursts
100 meters
75
Two types of ammunition cam be fired with this weapon i.e ——- and ——
High explosive, smoke
76
With both type of ammunition there is no variation in the range and maximum range i.e ——— meters can be achieved
4550
77
Under favourable weather conditions the mortar can produce an effective smoke screen for a limited period if fired smoke bomb ———- which has a fuze ———- filled with white phosphorus
M57D, V-19 PA
78
One bomb in favourable weather conditions can make a screen of ———- in length and for ———-
40-50 meters, 15-20 seconds
79
The availability of ——- with the mortar sight enable the weapon to engage those targets at night and in reduce visibility which are recorded during day light
Light instruments

heavy (5 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions