Vayudoot Aviation

1. SALR at mean sea level is about

10° C/Km

5° C/Km

5° F/Km

2. SALR = 5.5 °C, ELR = 4.5 °C ; atmosphere is

different

unstable

stable

3. DALR > ELR > SALR

potentially stable

latently stable

conditionally unstable

4. SALR approaches DALR

at -40° C

at 0° C

at - 15° F

5. If ELR = SALR = DALR the atmosphere is

Indifferent

Instable

Stable

6. An Isothermal atmosphere is

Unstable

Neutral

Stable

7. Inversion is _______ Lapse Rate (LR)

Neutral

Positive

Negative

8. DALR is approximately

15° C/km

5° C/km

10° C/km

9. Dry air is unstable when

ELR<DALR

ELR>DALR

ELR=DALR

10. Inversion in the atmosphere indicates

Stability

Instability

Neutral

11. DALR means

The rate at which temperature of unsaturated parcel of air falls with height when to ascent adibetically

The rate at which ascending parcel of saturated air cools

The rate at which temp falls with height

12. Surface temp. is 30 °C. Assuming DALR what is the temperature of 2 km

10° C

42° C

18° C

13. DALR = 9.8 °C, ELR = 6.8 °C ; atmosphere is

stable

unstable

indifferent

14. The process which to a large extent determines the vertical distribution of temperature in atmosphere is

Adiabatic

Isothermal

Isentropic

15. The saturated air is said to be unstable if

SALR=ELR

SALR<ELR

SALR>ELR

16. Environmental LR can be more than DALR

True

False

17. Inversion is common in

Post Monsoon

Winters

Monsoon

18. Dry air having a temperature of 35° C on surface when forced to rise adiabatically by 1 km would attain a temperature of

25° C

29° C

45° C

19. If ELR is less than SALR, the atmosphere is said to be

Absolutely stable

Conditional unstable

Absolutely unstable

20. Rise in temperature with height is

Inversion

Normal

Lapse

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