Related Questions

What ferrite device can be used instead of duplexer of isolate microwave transmitter and receiver when both are connected to the same antenna?
A Isolator
B Magnetron
C Simplex
D Circulator
What is the delay time for satellite transmission from earth transmitter to earth receiver?
A 0.5 s
B 1.0 s
C 5 ms
D 0.25 ms
Four defensive football players are chasing the opposing wide receiver, who has the ball. Calvin is directly behind the ball carrier. Jenkins and Burton are side by side behind Calvin. Zeller is behind Jenkins and Burton. Calvin tries for the tackle but misses and falls. Burton trips. Which defensive player tackles the receiver?
A Burton
B Zeller
C Jenkins
D Calvin
(i) What is global warming? How global warming affects the rapid change of climate? (ii) What are the bad impacts of climate change? (iii) How climate change affects the environment of Bangladesh (iv) How global warming can be minimized (v) What should be the role of students to protect the environment.
A (i) Global warming is the main natural reason and using harmful chemicals in everyday life the main reason created by men. The climate is changing rapidly that result in the rise of the earth's average temperature
B (ii) Climate change impacts include floods, cyclones, storm surges and drought, ice sheets melting which will seriously affect the agriculture and livelihood especially at the poor.
C (iii) Bangladesh is one of the largest deltas in the world which is highly vulnerable to Natural Disasters because of its Geographical location, Fiat and low-lying landscape, Population density, Poverty, Illiteracy, Lack of Institutional setup, etc.
D (iv) To reduce the bad impact of climate change people should be aware of. Tree plantation can reduce global warming which is the main natural reason for climate change. Stop using harmful chemicals can reduce environmental pollution which is the main man
E (v) Students should be careful to protect the environment and raise awareness. Thus the students can play a vital role to reduce bad impact of climate changes.
The transmitter substance at
A Sympathetic postganglionic nerve ending is usually norepinephrine
B Parasympathetic ganglia is acetylcholine
C Sympathetic ganglia is dopamine
D Parasympathetic postganglionic nerve ending is adrenaline
E Parasympathetic preganglionic nerve ending is adrenaline
In a transmitter ___________ oscillator is used
A Hartley
B RC phase-shift
C Wien-bridge
D Crystal
Unmodulated signal coming from a transmitter is know as
A Carrier signal
B Baseband signal
C Primary signal
D None of these
10 kW ক্ষমতার একটি Transmitter যা 500m তরঙ্গদৈর্ঘ্যের বেতার তরঙ্গ প্রেরণ করছে। প্রতি সেকেন্ডে নির্গত ফোটনের সংখ্যা -
A 1.513 x 1031
B 3.513 x 1031
C 2.513 x 1031
D 4.513  x 1031
Many businesses today use environment friendly practices. Which of the following is an environment friendly practice?
A persisting with multi -branch , paper dependent approaches.
B keeping the premises well -lighted and super -cool during summer
C buying wholesale office supplies in bulk .
D spurning options for green cleaning.
Defining green banking is relatively easy. It means promoting environment -friendly practices and reducing your carbon footprint from your banking activities. This comes in many forms : using online banking instead of branch banking; paying bills online, opening up CDs (certificates of deposit) and money market accounts at online banks instead of large multi-branch banks. A green bank takes the biggest steps to support local green initiatives. Any combination of the above personal banking practices can help the environment. In this respect, online banks and smaller community banks have better track records than larger banks .However, these larger banks may be induced to go green . According to the passage, larger, multi -branch banks .
A can never become green banks .
B can become green banks if they reduce the number of branches and eliminate the use of paper .
C can become green banks if they can greatly reduce or eliminate carbon footprint form their banking activities.
D can become green banks if they support local green initiatives

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