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heavy > MCQs 60 > Flashcards

MCQs 60 Flashcards

1
Q

——- is one of the oldest and simplest form of cannon

A

Mortar

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2
Q

Its ——- enables the projectiles to clear high ground and mountain tops

A

High angle of fire

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3
Q

There is a need for such a weapon where ——— fail to destroy the enemy, so mortars are the only weapons which are effective in such areas

A

Flat trajectory weapons

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4
Q

To obtain effective fire on the targets and to get the best use out of this weapon, it is essential that, the commanders understand its ———, —— and ——— thoroughly

A

Characteristics, capabilities and limitations

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5
Q

The elevation of the barrel varies between ——- at maximum range and ———- at minimum.

A

45 degrees, 80 degrees

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6
Q

The high angle of elevation enables its bombs to achieve a high angle of ——— and ———

A

Ascent and descent

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7
Q

The vertex height of of its trajectory varies between —— and —- at charge 0, —— and —— at charge 1, —— and —— at charge 2

A

225 meters, 115 meters, 364 meters, 186 meters, 785 meters, 421 meters

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8
Q

It can be sited and brought into action from behind high cover, where it will be safe from the ———-

A

Enemy’s small arms fire

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9
Q

It can engage targets on reverse slopes, dead ground, ——— etcetera, where the —— are ineffective

A

Deep nullahs, low trajectory weapons

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10
Q

It is a light weapon and is carried by ———-

A

One man

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11
Q

The ——— is carried by the other ———- of its crew

A

First line pouch ammunition, two members

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12
Q

It has on weapon ——- and ——— in reserve

A

30 bombs, 30 bombs

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13
Q

It can be taken across across any ——- and ——- and can support the company in all types of operations

A

Type of terrain, obstacles

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14
Q

Due to ——— and flash produced while firing. It can be easily detected by the enemy if it is not sited behind ——- or in low ground

A

Distinct sound, cover

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15
Q

Moreover mortars can easily be located by ——- and ——— equipment, even if sited behind cover, so these are always liable to counter me

A

Radar, sound ranging

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16
Q

The mortar can fire ———- without aiming

A

15-20 round per minute

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17
Q

Mortars can be given any direction by ———-

A

Moving the bipod

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18
Q

Without moving the bipod ——- left and right traverse can be achieved through the ———

A

200 mils, traversing gear

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19
Q

It bursts into numerous ——-, it has a killing area of —— and danger area of ——— all round

A

Small fragments, 15 meters, 100 meters

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20
Q

Effective fire can be brought down on targets which have been ——, during night, fog or ———. The mortars can also engage ——- at night

A

Pre registered, smoke, new targets

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21
Q

It is very accurate weapon thus it does not have much of ———. The weapon can even destroy ——- targets effectively

A

Dispersion zone, point targets

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22
Q

If the ———- is not coordinated with the barrel and apart from many other factors like wind, ammunition and ——— to the target, the first bomb may not fall on the target, therefore we can adjust the ———, so that the subsequent bombs land on the target through the process of range

A

Mortar sight, wrong estimation of range, elevation

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23
Q

As the time of flight of the bomb varies between ———— for different ranges and charges

A

10 and 25 seconds

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24
Q

The wind will have an appreciable effect on the path of the bomb, where the time of flight is more than ———

A

15 seconds

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25
Q

The mortar can fire at a minimum range of ——— and at maximum range of ———-

A

153 meters, 1494 meters

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26
Q

This is a high trajectory weapon and is simple to fire. Its maximum range is ———- (—-)

A

1494 meters, 1614 yards

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27
Q

Pull the barrel catch in the —— upto the barrel catch stop with the ——- and thumb of the ——- hand

A

Clockwise direction, forefinger, right hand

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28
Q

With the left hand hold the barrel from the ——— and separate the barrel from the ——-

A

Hand grip, base plate

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29
Q

It has a ——- which is kept in the sight box, when not in use

A

Detachable sight

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30
Q

It consists of a body and ——- sight

A

Collimeter

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31
Q

Hold the bipod assembly from the ———- with left hand and barrel from the ——— with the right hand

A

Shock absorber, hand grip

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32
Q

Push the barrel forward and fit it in the ——- so that the shock absorber fits around the ———-

A

Clamping bracket, hand grip post

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33
Q

Fit the ——- of the barrel in its socket in the base plate and push the barrel catch forward and ensure the barrel is properly locked in the ——

A

Spherical projection, base plate

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34
Q

Some parts of ——— needed for replacement and others required for cleaning are earned in a bag

A

60 millimeter mortar

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35
Q

Fit the ‘L’ type spanner on the —— and rotate it —— and remove it

A

Firing pin, anti clockwise

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36
Q

By using the ——- with any suitable material, the bore will be thoroughly dried and inspected

A

Cleaning rod

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37
Q

By looking through the barrel, if a shadow ring is found anywhere on the inner surface, it is a ———

A

Dent

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38
Q

If the depth of the dent exceeds ——- the barrel should not be used

A

0.4 millimeter

39
Q

For checking ——- put a ruler along the surface of the barrel

A

Expansion

40
Q

If at any place a space between the barrel and the ruler is found it means the barrel has ——-

A

Expanded

41
Q

It is difficult to detect a ——. If a —— is suspected anywhere on the upper surface, rub off the paint and examine it carefully

A

Crack, crack

42
Q

—— will be dried and examined to ensure that firing pin is correctly positioned

A

Breech piece

43
Q

When the barrel is locked into the base plate socket, the rounded portion of the spherical projection should be under the ——— and ———

A

Barrel catch, socket collar

44
Q

The spherical projection, socket and under side of the ——- will be cleaned

A

Base plate

45
Q

The ———, should be examined for distortion

A

Base plate

46
Q

The barrel should be locked in the ———— to ensure that the barrel catch is functioning correctly

A

Spherical projection socket

47
Q

Check traversing mechanism for any play which may exist because of wearing out of the ——— and tube

A

Traversing rod

48
Q

Prepare a solution of ——- and ——- and wash the barrel

A

Hot water, washing soap

49
Q

Wrap a piece of ——- round the head of the cleaning rod to clean the ———

A

Garnish, bore

50
Q

When cleaned the barrel and its attachments will be inspected for for any ——- and —-

A

Defects and losses

51
Q

It will be greased and stored with ——— on

A

Muzzle cover

52
Q

Deflection scale is graduated up to ——- right and ——— left

A

200 mils, 200 mils

53
Q

The graduations marked in —— represent deflection towards the right and those marked in ——— represent deflection towards the left

A

White, red

54
Q

Each graduation represents ——-

A

2 mils

55
Q

For applying deflection to the left, rotate the deflection knob in the ——— till the required graduation marked in red coincides with the index line

A

Clockwise direction

56
Q

For applying deflection to the right, rotate the deflection in ——— till the required graduation marked in white coincides of with the index line

A

Anti clockwise direction

57
Q

Major scale has ——- and each graduation is further divided into —— which are represented on the micrometer scale

A

11 graduations, 100 parts

58
Q

Each graduation on the micrometer scale represents ——-

A

5 parts

59
Q

To increase the elevation, rotate the elevation knob in the ——and to reduce it rotate it in the ———

A

Clockwise direction, anti clockwise direction

60
Q

Do not keep the eye at a distance from the ———-

A

Rubber eye shield

61
Q

Lower or elevate the ——- as required

A

Collimator light

62
Q

After the elevation has been set, number 1 brings the ——- in the centre by using the ———-

A

Elevation bubble, elevation handle

63
Q

While using the major scale, the ——- should be at zero

A

Elevation micrometer scale

64
Q

The eyes should be in line with the ——- while setting elevation on major scale

A

Index line

65
Q

Increase in range will depress the ——-

A

Barrel

66
Q

The given deflection is set on the sight, and after the mortar is laid for elevation, number 1 looks through the collimator sight to see if it is on the ———-

A

Aiming point

67
Q

If there is a little variation it is adjusted by operating the ——-

A

Traversing handle

68
Q

Finally ——- checks that both the bubbles are in the centre

A

Number 1

69
Q

During ——— it may not be possible to relay the mortar after every bomb fired from the mortar

A

Rapid fire

70
Q

If the target is not visible then lay the mortar on the ———- which is in line with the target

A

Aiming post

71
Q

Container contains two cells of ——- each

A

1.5 volts

72
Q

Small size torch is used to light up the ——— so that sight can be set

A

Sight graduations

73
Q

Place the aiming lamp fixed on the aiming post at a distance of ——— from the mortar

A

5 meters

74
Q

Record the deflection to other targets which are ———— right and left to the target on which the mortar is laid

A

200 mils

75
Q

During firing the ———- should be kept lighted otherwise it should be switched off

A

Aiming lamp

76
Q

If the aiming does not function a ——— may be fixed at the post on the ——

A

Dry cell battery, aiming line

77
Q

Sight is tested correctly relate the ——- and impact so that the bomb falls at the range and ——- set on sight

A

Points of aim, deflection

78
Q

Set the clinometer for maximum range i.e ———

A

45 degrees

79
Q

Sight is correct, if the —— is at zero and the index line is at —- on the elevation major scale

A

Elevation micro meter scale, 10

80
Q

In case of any difference take ——— readings and work out their average

A

Three concurrent

81
Q

Loosen the ———— so that the micrometer scale becomes free

A

Elevation knob screw

82
Q

If there is major difference, then adjust the ———- by loosening the screws

A

Major scale plate

83
Q

With the help of supports, position the plumb line ——— meters or ——— yards behind the mortar position and the inspection target ——— feet or ——— meters from the object lens of the sight

A

3 to 5, 3 to 5, 32.5, 9.907

84
Q

Select an aiming point at least ——- meters (——- yards) away

A

200, 218.75

85
Q

——- is the simplest apparatus to calculate the elevation and charge for range between ——— to ——— meters

A

Shamaila dial, 150 meters, 2075

86
Q

60 millimeter mortar shamaila dial is dial shaped which has ——- written on it

A

Firing table

87
Q

The front side of the dial is used if the range is ——— or less

A

1000 meters

88
Q

The rear side of the dial is used for ranges between ——- meters and ——- meters

A

1050, 2075

89
Q

———— for various ranges are inscribed in different colours for easy differentiation

A

Firing tables

90
Q

It is a ———- dial having diameter of —- with a rotating , transparent pointer ( hairline)

A

Circular plastic, 6 centimeter

91
Q

The range table is composed according to the ———- law of ——- and to the combination of service practice and theoretical calculation

A

Air resistance, 1943

92
Q

The allowance given at the top of the range table suits any firing range below ———- above sea level

A

5000 meters

93
Q

When gun emplacement altitude is not at zero use the column of sight allowance of altitude of —— above sea level to make corrections of the sight

A

1000 meters

94
Q

Full name of the shell: model 1963,

A

60mm mortar semi- Steel Cast Iron Anti-Personnel Shell

heavy (5 decks)

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