The barrier potential accross each depletion layer is

Choose the correct word----Their eyes hurt ----looking accross the bright glassy sea.

A

of

B

on

C

with

D

for

Routers operate at layer _____. LAN switches operate at layer _____. Ethernet hubs operate at layer _____. Word processing operates at layer _____.

A

3, 3, 1, 7

B

3, 2, 1, none

C

3, 2, 1, 7

D

3, 3, 2, none

E

All of the above

Under the depletion allowance method in computing depreciation, the depletion charge is equal to either ______ whichever is smaller.

A

Fixed percentage of gross income or the net taxable income

B

Fixed percentage of gross income or 50% of the net taxable income

C

50% of the fixed percentage of gross income or 50% of the net taxable income

D

50% of the fixed percentage of gross income or the net taxable income

The depletion allowance method of computing depletion is commonly known as ______.

A

Unit method

B

Percentage method

C

Factor method

D

Sinking fund method

CFC (chloro fluoro carbon) is very highly reactive in causing depletion of ozone layer in the atmosphere. Each atom of chlorine liberated from CFC is capable of decomposing __________ molecules of ozones.

A

10²

B

10⁵

C

10⁹

D

10¹⁵

Which of the following refrigerant has the maximum ozone depletion potential in the stratosphere?

A

Ammonia

B

Carbon dioxide

C

Sulphur dioxide

D

Fluorine

What is the barrier potential of a silicon diode at room temperature?

A

0.7V

B

0.3V

C

1 V

D

2 m V per degree Celsius

E

None of the above

ডায়োড বিমুখী বায়াস(reversed biased) হলে নিঃশেষিত স্তর (depletion layer)-

A

একই থাকে

B

বৃদ্ধি পাবে

C

হ্রাস পায়

D

বিলুপ্ত হয়

Release of which among the following is the primary reason for depletion of the ozone layer?

A

Nitrous oxide

B

Hydrogen dioxide

C

Chlorofluro carbon

D

Carbon monoxide

Depletion of ozone layer causes

A

Breast cancer

B

Skin cancer

C

Lung cancer

D

Blood cancer

The barrier potential accross each depletion layer is

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