1 ) The capacitance of a reverse-biased pn Junction ____ with increase of reverse voltage .
A ) Decrease ,
B ) Increase ,
C ) Does not Change ,
Correct answer : - A ) Decrease ,
2 ) A _____ source can form an amplifier along with a load resistor .
A ) current -dependent Current ,
B ) voltage-dependent current ,
C ) current -dependent Voltage ,
D ) Volatge-dependent Voltage ,
Correct answer : - B ) voltage-dependent current ,
3 ) The small-signal models of npn and pnp transistors are _________ .
A ) Identical ,
B ) Different ,
Correct answer : - A ) Identical ,
4 ) Under _________ , the pn junction carries a current that is exponential function of the applied voltage .
A ) forward bias ,
B ) Reverse Bias ,
C ) Equillibrium ,
D ) None of above ,
Correct answer : - A ) forward bias ,
5 ) Consider the diode to follow constant voltage model . What is the value of current flowing through the resistor .
A ) 2 Amperes ,
B ) 1 Ampere ,
C ) 0 Ampere ,
D ) Current is infinite ,
Correct answer : - B ) 1 Ampere ,
6 ) In this circuit two real diodes are connected in parallel to each other . Green diode has half the cross-section area as that of red diode , as shown in the figure . " Vf " is the voltage across diode when it is operating under forward bias condition . What can we say about the values of currents I1 & I2 .
Correct answer : - A ) .
7 ) Consider the diode to follow constant voltage model . What is the value of current flowing through the resistor .
A ) 2 Amperes ,
B ) 1 Ampere ,
C ) 0 Ampere ,
D ) Current is infinite ,
Correct answer : - A ) 2 Amperes ,
8 ) What is Vout for this circuit ? Both diodes are ideal diodes .
A ) Option a ,
B ) Option b ,
C ) Option c ,
D ) Option d ,
Correct answer : - D ) Option d ,
9 ) In the Circuit , D1 and D2 are ideal diodes . The values of ID1 and ID2 are _________ .
A ) Zero Each ,
B ) ID1=0, ID2=4mA ,
C ) ID1=4mA, ID2=0 ,
D ) 4mA Each ,
Correct answer : - B ) ID1=0, ID2=4mA ,
10 ) Which of the following full-wave rectifier circuit is the correct one .
A ) Circuit 1 ,
B ) Circuit 2 ,
C ) Circuit 3 ,
D ) Circuit 4 ,
Correct answer : - B ) Circuit 2 ,
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