Atmospheric Pressure

Question 1

Winds in a low pressure

Answer 1

》(a) Converge
(b) Diverge
(c) Go straight

Question 2

Low pressure is associated with

Answer 2

(a) Good Weather
》(b) Bad Weather
(c) None

Question 3

In a high pressure area winds are

Answer 3

(a) Normal
(b) Strong
》(c) Weak

Question 4

Flying from Low to High an altimeter would read

Answer 4

(a) Over
》(b) Under
(c) constant

Question 5

Isallobars are lines of equal

Answer 5

(a) Pressure
(b) Temperature Tendency
》(c) Pressure Tendency

Question 6

What kind of a barometer is an altimeter

Answer 6

》(a) Aneroid
(b) Mercury
(c) Alcohol.

Question 7

A region between two Lows and Two Highs is

Answer 7

(a) Depression
(b)Secondary Low
》(c) Col

Question 8

Bad weather and better visibility is associated with

Answer 8

(a) High
》(b) Low
(c) Col

Question 9

The relationship between height and pressure is made use in construction of

Answer 9

》(a) Altimeter
(b) ASI
(C)VSI

Question 10

Altimeter always measure the height of aircraft above

Answer 10

(a) MSL
(b) datum of 1013.2 hPa
》(c) datum at which its sub-scale is set

Question 11

Two aircraft flying at same indicated altitude with altimeters set to 1013.2hPa.One is flying over cold air mass and other over warm air mass. Which of the two has greater altitude?

Answer 11

》(a) Ac flying over warm air mass (b) Ac flying over cold air mass

Question 12

The rate of fall of pressure with height in a warm air mass compared to cold air mass
will be

Answer 12

(a) Same
(b) More
》(c) Less

Question 13

An increase of 1000’ at msl is associated with decrease of pressure of

Answer 13

(a) 100 hPa
(b) 1000 hPa
(c) 3 hPa
》(d) 33 hPa

Question 14

Lines drawn through places of equal pressure are known as

Answer 14

》(a) Isobars
(b) Isotherms
(c) Isogonal
(d) Isoclinal

Question 15

Which is true?
(a) Trough has frontal characteristics
(b) At trough winds back in N-hemisphere
(c) At trough winds veer in N-hemisphere

Answer 15

(a) Trough has frontal characteristics
》(b) At trough winds back in N-hemisphere
(c) At trough winds veer in N-hemisphere

Question 16

Semi diurnal pressure changes are most pronounced in

Answer 16

(a) Polar region
(b) Middle latitudes
》(c)Tropics

Question 17

Flying from Delhi to Kolkata at constant indicated altitude but, experiencing drift to Starboard. The actual altitude will be (vis-à-vis) indicated altitude

Answer 17

》(a) Lower
(b) Same
(c) Higher

Question 18

In the Southern Hemisphere, around a Low Pressure Area wind blows

Answer 18

》(a) In clockwise direction
(b) In anticlockwise direction
(c) Across isobars towards the centre

Question 19

Q19. Altimeter of a/c on ground reads aerodrome elevation; its sub-scale is set to

Answer 19

》(a) QNH
(b) QNE
(c) QFF
(d) QFE

Question 20

Instrument for recording pressure is called

Answer 20

(a) Anemograph
》(b) Barometer
(c)Hygrograph

Question 21

Poor visibility is associated with

Answer 21

》(a) High
(b) Low
(c) Trough

Question 22

On either side, perpendicular to the……. pressures rise

Answer 22

》(a) Trough
(b) Ridge
(c) Low

Question 23

Fall of pressure with height is more rapid in
(a) Cold areas
(b) Warm areas
(c) Humid areas

Answer 23

》(a) Cold areas
(b) Warm areas
(c) Humid areas

Question 24

300 hPa in ISA corresponds to the level

Answer 24

(a) 20,000 ft
》(b) 30,000 ft
(c) 35,000 ft

Question 25

18,000 ft height in ISA corresponds to the pressure level

Answer 25

(a) 700 hPa (b) 200 hPa 》(c) 500 hPa

Question 26

200 hPa in ISA corresponds to the level

Answer 26

(a) 20,000 ft (b) 30,000 ft 》(c) 40,000 ft

Question 27

24,000 ft height in ISA corresponds to pressure level

Answer 27

》(a) 400 hPa (b) 500 hPa (c) 300 hPa

Question 28

700 hPa in ISA corresponds to the Flight level

Answer 28

(a) 20,000Oft 》(b) 10,0000 ft (c) 18,000 ft

Question 29

40,000 ft height in ISA approximately corresponds to pressure level

Answer 29

(a) 400 hPa (b) 500 hPa 》(c) 200 hPa

Question 30

850 hPa in ISA corresponds to the height

Answer 30

(a) 7,000 ft 》(b) 5,000 ft (c) 10,000 ft

Question 31

Atmospheric pressure is due to

Answer 31

(a) wind (b) temperature (c) gravity 》(d) density

Question 32

An aircraft is gaining altitude, inspite of altimeter reading constant altitude. Why?

Answer 32

(a) Standard pressure has risen 》(b) Flying towards High (c) Flying towards Low (d) Temperature has decreased

Question 33

A contour of 9160 m can be expected on a constant pressure chart for pressure level

Answer 33

(a) 500 hPa (b) 400 hPa 》(c) 300 hPa (d) 200 hPa

Question 34

In contour chart of 300 hPa, isohypse (contours) are drawn at interval of

Answer 34

(a) 20 gpm (b) 40 gpm (c) 60 gpm 》(d) 80 gpm

Question 35

In constant pressure chart of 500 hPa, isohypse are drawn at interval of

Answer 35

(a) 20 gpm 》(b) 40 gpm (c) 60 gpm (d) 80 gpm

Question 36

QNH of an aerodrome 160 m AMSL is 1005 hPa. QFE? Assuming 1 hPa -8m

Answer 36

(a) 1010 hPa 》(b) 985 hPa (c)1005 hPa (d) 990 hPa

Question 37

Steep pressure gradient would mean

Answer 37

(a) Contours far apart, weak wind (b) Contours far apart ,strong wind (c) Isobars far apart and temperature low 》(d) Isobars closely packed and strong wind

Question 38

What type of inversion occurs when a stable layer lies in a high pressure area

Answer 38

(a) Negative (b) Radiation 》(c) Subsidence (d) Airmass

Question 39

Which of the following would cause true altitude to increase when altimeter indicates constant altitude?

Answer 39

(a) Warm/ Low (b) Cold/ Low 》(c) Hov High (d) Cool/ Low

Question 40

The movement of wind in relation to a cyclone is

Answer 40

(a) Descending and subsiding 》(b) Ascending and converging (c) Descending and cooling (d) Ascending and diverging