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Question Bank
Questions for IC JETSTREAM
Answer the following questions
Test Mode
Training Mode
1. At and near the STJ the temperature gradient is very
Moderate
Large
Small
2. The TJ is strongest in
Sep to Oct
June
July - Aug
3. A jet stream can be recognized by
High Pressure
High level dust
Streaks of CI
Lenticular clouds
4. The vertical wind shear in Jet stream is about
6m/s km
5m/s km
8m/s km
5. In a wavy jet the Jet streaks are located over or near the
Between Trough and Ridge
Trough
Ridge
6. Compared to horizontal wind shear the vertical wind shear in a Jet stream is
stronger
weaker
same
7. The TJ is located over Indian, approximately at a height of
15 - 16 km
11 - 12 km
12 - 13 km
8. Sub-tropical Jet stream (STJ) is
Westerly
Southerly
Easterly
9. STJ has a layered structure. There are often two layers of max wind to the ____ of jet core
S
N
SW
10. The arbitrary lower limit of jet core velocity has been assigned by WMO as
60 kt
60 m/s
70 m/s
11. The southern most position of STJ is February is
22°N
18°N
20°N
12. The TJ prevails over the Indian Peninsula from
Jun to Aug
May to Jun
Sep to Oct
13. The STJ strengthens
Upstream
Northwards
Downstream
14. In the TJ the wind shears are much _____ than the STJ
less
same
more
15. Vertical wind shear in STJ is greater ______ the core
below
along
above
16. The TJ is located over the Indian Peninsula, approximately at
18°N
13°N
17°N
17. The wind speed along the axis of a jet stream is always
Uniform
Not uniform
18. Jet stream has
one maxima
one or more maxima
only two maxima
19. When and where tropical jet stream occurs
All year along equator
In winters over Russia
In Middle East in summers
In summers over SE Asia and Central Africa
20. In a jet stream, the path of the maximum speed is known as
Axis
Core
Jet streak
21. The normal position of Sub-tropical Jet Stream is
35°N
27°N
30°N
22. Flying at right angles to a jet stream with falling pressure you will experience
Wind from left
Increasing head wind
Wind from right
Increasing tail wind
23. TJ is
Southerly
Easterly
Westerly
24. The STJ affects India from
Aug to Sep
Jun to Jul
Oct to May
25. Along the axis of a jet stream there are centres of high speed winds, these are called
Core
Axis
Jet streaks
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