The circuit has resistors, capacitors and semiconductor diodes. The circuit will be known as

The total resistance for two resistors in parallel is equal to the sum of the two resistors.

A

True

B

False

Which of the following diodes uses a metal-semiconductor junction?

A

General purpose diodes

B

Fast recovery diodes

C

Schottky diode

D

None of the mentioned

The impurity level in an extrinsic semiconductor is about of pure semiconductor.

A

10 atoms for 108 atoms

B

1 atom for 108 atoms

C

1 atom for 104 atoms

D

1 atom for 100 atoms

As the doping to a pure semiconductor increases, the bulk resistance of the semiconductor ___________

A

Remains the same

B

Increases

C

Decreases

D

None of the above

নিম্নের কোনটি p-টাইপ অর্ধপরিবাহীতে n-টাইপ অর্ধপরিবাহীর তুলনায় বেশি আছে? (Which of the following does a p-type semiconductor have more compared to an n-type semiconductor-)

A

মোট ধনাত্মক আধান (total positive charge)

B

মোট আধান (total charge)

C

ইলেকট্রন ঘনত্ব (density of electrons)

D

হোল ঘনত্ব (density of holes)

When one of three series resistors is removed from a circuit and the circuit is reconnected, the current

A

Increases

B

Increases by one-third

C

Decreases by one-third

D

Decreases by the amount of current through the removed resistor

In the d.c. equivalent circuit of a transistor amplifier, the capacitors are considered ___________

A

Short

B

Open

C

Partially short

D

None of the above

In the a.c. equivalent circuit of a transistor amplifier, the capacitors are considered ___________

A

Short

B

Open

C

Partially open

D

None of the above

The total resistance of a series circuit is equal to the difference between the largest and smallest value resistors.

A

True

B

False

When a number of resistors are connected in series in a circuit, the value of current:

A

increases

B

becomes half

C

decreases

D

remains the same

The circuit has resistors, capacitors and semiconductor diodes. The circuit will be known as

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