When diodes are connected in series to increase voltage rating the peak inverse voltage per junction
When diodes are connected in series to increase voltage rating the peak inverse voltage per junction
The depletion layer width of Junction
The depletion layer width of Junction
When avalanche breakdown occurs covalent bonds are not affected.
When avalanche breakdown occurs covalent bonds are not affected.
In monolithic ICs, all the components are fabricated by
In monolithic ICs, all the components are fabricated by
The dynamic resistance of a forward biased p-n diode
The dynamic resistance of a forward biased p-n diode
Which one of the following is not a characteristic of a ferroelectric material?
Which one of the following is not a characteristic of a ferroelectric material?
In a half wave rectifier, the load current flows
In a half wave rectifier, the load current flows
In a bipolar transistor, the base collector junction has
In a bipolar transistor, the base collector junction has
Forbidden energy gap in germanium at 0 K is about
Forbidden energy gap in germanium at 0 K is about
The most commonly used semiconductor material is
The most commonly used semiconductor material is
As compared to bipolar junction transistor, a FET
As compared to bipolar junction transistor, a FET
For a P-N diode, the number of minority carriers crossing the junction depends on
For a P-N diode, the number of minority carriers crossing the junction depends on
Hall effect is observed in a specimen when it is carrying current and is placed in a magnetic field. The resultant electric field inside the specimen is
Hall effect is observed in a specimen when it is carrying current and is placed in a magnetic field. The resultant electric field inside the specimen is
An electron in the conduction band
An electron in the conduction band
Silicon is not suitable for fabrication of light emitting diodes because it is
Silicon is not suitable for fabrication of light emitting diodes because it is
Which variety of copper has the best conductivity?
Which variety of copper has the best conductivity?
Permalloy is
Permalloy is
The output, V-I characteristics of an Enhancement type MOSFET has
The output, V-I characteristics of an Enhancement type MOSFET has
Piezoelectric quartz crystal resonators find application where
Piezoelectric quartz crystal resonators find application where
A transistor has a current gain of 0.99 in the CB mode. Its current gain in the CC mode is
A transistor has a current gain of 0.99 in the CB mode. Its current gain in the CC mode is
At room temperature the current in an intrinsic semiconductor is due to
At room temperature the current in an intrinsic semiconductor is due to
If too large current passes through the diode
If too large current passes through the diode
Assertion (A): In p-n-p transistor collector current is termed negative.
Reason (R): In p-n-p transistor holes are majority carriers.
Assertion (A): In p-n-p transistor collector current is termed negative.
Reason (R): In p-n-p transistor holes are majority carriers.
Free electrons exist in
Free electrons exist in
In the sale of diamonds the unit of weight is carat. One carat is equal to
In the sale of diamonds the unit of weight is carat. One carat is equal to
The sensitivity of human eyes is maximum at
The sensitivity of human eyes is maximum at
Assertion (A): A VMOS can handle much larger current than other field effect transistors.
Reason (R): In a VMOS the conducting channel is very narrow.
Assertion (A): A VMOS can handle much larger current than other field effect transistors.
Reason (R): In a VMOS the conducting channel is very narrow.
An intrinsic silicon sample has 1 million free electrons at room temperature. As the temperature is increased
An intrinsic silicon sample has 1 million free electrons at room temperature. As the temperature is increased
The amount of photoelectric emission current depends on
The amount of photoelectric emission current depends on
In which of these is reverse recovery time nearly zero?
In which of these is reverse recovery time nearly zero?
Which of the following has highest resistivity?
Which of the following has highest resistivity?
In a bipolar transistor, the emitter base junction has
In a bipolar transistor, the emitter base junction has
Each cell of a static Random Access memory contains
Each cell of a static Random Access memory contains
How many free electrons does a p type semiconductor has?
How many free electrons does a p type semiconductor has?
Assertion (A): A p-n junction has high resistance in reverse direction.
Reason (R): When a reverse bias is applied to p-n junction, the width of depletion layer increases.
Assertion (A): A p-n junction has high resistance in reverse direction.
Reason (R): When a reverse bias is applied to p-n junction, the width of depletion layer increases.
What is the necessary a.c. input power from the transformer secondary used in a half wave rectifier to deliver 500 W of d.c. power to the load?
What is the necessary a.c. input power from the transformer secondary used in a half wave rectifier to deliver 500 W of d.c. power to the load?
Work function is the maximum energy required by the fastest electron at 0 K to escape from the metal surface.
Work function is the maximum energy required by the fastest electron at 0 K to escape from the metal surface.
Fermi level is the amount of energy in which
Fermi level is the amount of energy in which
Which of the following could be the maximum current rating of junction diode by 126?
Which of the following could be the maximum current rating of junction diode by 126?
The forbidden energy gap between the valence band and conduction band will be least in case of
The forbidden energy gap between the valence band and conduction band will be least in case of
Power diodes are generally
Power diodes are generally
A thermistor is a
A thermistor is a
The sensitivity of human eyes is maximum at
The sensitivity of human eyes is maximum at
For a NPN bipolar transistor, what is the main stream of current in the base region?
For a NPN bipolar transistor, what is the main stream of current in the base region?
Light dependent resistors are
Light dependent resistors are
In an ideal diode there is no breakdown, no __________ current, and no forward __________ drop.
In an ideal diode there is no breakdown, no __________ current, and no forward __________ drop.
In a semiconductor diode, the barrier offers opposition to
In a semiconductor diode, the barrier offers opposition to
Assertion (A): A JFET can be used as a current source.
Reason (R): In beyond pinch off region the current in JFET is nearly constant.
Assertion (A): A JFET can be used as a current source.
Reason (R): In beyond pinch off region the current in JFET is nearly constant.
