The following configuration of the logic gate is equivalent to

         

1.  NAND gate

2.  XOR gate

3.  OR gate

4.  NOR gate

 

Concept Questions :-

To view Explanation, Please buy any of the course from below.
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:


Three ideal diodes are connected to the battery as shown in the circuit. The current supplied by the battery is

                                                 

1.  Zero

2.  4A

3.  2A

4.  6A

Concept Questions :-

To view Explanation, Please buy any of the course from below.
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:


In a common emitter transistor amplifier, the audio signal voltage across resistance of 1 kΩ is 2V. If the base resistance is 200Ω and the current amplification factor is 50, the input signal voltage will be

(1) 4 mV

(2) 8 mV

(3) 16 mV

(4) 32 mV

 

Concept Questions :-

To view Explanation, Please buy any of the course from below.
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:


If a small amount of aluminium is added to the silicon crystal

1.  Its resistance is decreased

2.  It becomes a p-type semiconductor

3.  There will be less free-electron than holes in semiconductor

4.  All of these are correct

Concept Questions :-

Types of semiconductors
To view Explanation, Please buy any of the course from below.
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:


A transistor is operated in common emitter configuration at Vc = 10V. When base current is changed from 10mA to 30mA, it produces a change in emitter current from 2A to 4A, the current amplification factor is

1.  100

2.  99

3.  10

4.  9

Concept Questions :-

Applications of Transistor
To view Explanation, Please buy any of the course from below.
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:


When a p-n junction is forward biased:

1.  Depletion region becomes thick

2.  p-side is at a higher potential than n side

3.  Current flowing is zero

4.  Effective resistance is of the order of 106W

Concept Questions :-

To view Explanation, Please buy any of the course from below.
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:


When a transistor is used as a switch it is in:

1.  Active state

2.  Cut off state

3.  Saturation state

4.  Both cut off state and saturation state are possible

Concept Questions :-

Applications of Transistor
To view Explanation, Please buy any of the course from below.
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:


Use of transistor as an amplifier works in the region -

1.  Cut off region

2.  Saturation region

3.  Passive region

4.  Active region

Concept Questions :-

Applications of Transistor
To view Explanation, Please buy any of the course from below.
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:


Which of the following is correct for n-type semiconductor?

1.  Electron is majority carriers and trivalent atoms are dopants.

2.  Electrons are majority carriers and pentavalent atoms are dopants.

3.  Holes are majority carriers and pentavalent atoms are dopants.

4.  Holes are majority carriers and trivalent atoms are dopants.

Concept Questions :-

Applications of PN junction
To view Explanation, Please buy any of the course from below.
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:


If α be the current gain of a transistor in common base mode and β be the current gain incommon emitter mode then-

1.  α < 1 

2.  β > 1 

3.  α = β1 + β

4.  All of these

 

Concept Questions :-

To view Explanation, Please buy any of the course from below.
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level: