INSTRUCTIONS- 1. NUMBER OF QUESTIONS 25 2. HAS A TIME LIMIT OF 15 MINUTES 3. HAS A PASS MARKS OF 30% 4. QUESTIONS PER PAGE 1 5. EACH QUESTIONS HAS 1 MARKS 6. NEGATIVE MARKING FOR EACH QUESTIONS IS 0. 25 7. WILL ALLOW TO YOU GO BACK ,SKIP AND CHANGE YOUR ANSWERS 8. WILL ALLOW TO YOU PRINT OUT YOUR RESULT AND CERTIFICATE 9. WILL ALLOW TO YOU PRINT OUT YOURS RESPONSE SHEET WITH CORRECT ANSWER KEY AND EXPLANATION.
Heat
Light
Radiation
All of the above
Thermionic emission
Tunneling of charge carriers across the junction
Diffusion of charge carriers across the junction
None of the above NONE OF THESE
Its breakdown voltage is high
Its reverse saturation current is low
Its cut-in voltage is high
None of the above
An indirect band gap semiconductor
A direct band gap semiconductor
A wide band gap semiconductor
None of the above
Has a high forward voltage rating
Has a sharp breakdown at low reverse voltage
Is useful as an amplifier
None of the above
It operates in the reverse region
It is a constant voltage device
It is a constant current device
All of the above
10 V
25 V
15 V
Zero
GaAs
C and Si
GeAs
None of these
Automatic frequency control
Automatic gain control
Automatic volume control
None of the above
0
25
15.75
None of above
Reference voltage elements
Reference current elements
Reference resistance
None of these
Specially doped p-n junctions
Normally doped p-n junctions
Lightly doped p-n junctions
None of the above
It is lightly doped
It is heavily doped
It has weak covalent bonds
None of the above
Has a high forward voltage rating
Is useful as an amplifier
Has a sharp breakdown at low reverse voltage
None of the above
Decreases
Increases
Remains the same
None of the above none of these
Below 5 V
Above 5 V
Equal to 5 V
None of the above
Be zero
Have a finite value
Be infinite
None of the above none of these
Two diode full-wave rectifier is suitable
Both bridge and full-wave rectifier are suitable
Bridge rectifier is suitable
None of the above none of these
Vm
Vm/2
2Vm
None of these
Fundamental frequency
Second harmonic
DC component
None of the above none of these
High cost, more weight and external field produced by a series inductor
High cost, less weight
Low cost, more weight
None of these
Smaller the dc voltage across the load
Longer the time that current pulse flows through the diode
Larger the peak current in the rectifying diode
None
Half-wave voltage doubler
Full-wave voltage doubler
Full-wave bridge circuit
None of the above
Majority carrier moves from junction
Storage of minority charge
Both
None of these
CB
CC
CE
ALL