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 Normal to both current and magnetic field In the direction of current In arbitrary direction Antiparallel to magnetic field TRUE ANSWER : ? YOUR ANSWER : ?
In a semiconductor diode, the barrier offers opposition to Holes in P-region only Free electrons in N-region only Majority carriers in both regions Majority as well as minority carriers in both regions TRUE ANSWER : ? YOUR ANSWER : ?
For a P-N diode, the number of minority carriers crossing the junction depends on None of these Potential barrier Rate of thermal generation of electron hole pairs Forward bias voltage TRUE ANSWER : ? YOUR ANSWER : ?
Light dependent resistors are Intrinsic semiconductor Either A or B Lightly doped semiconductor Highly doped semiconductor TRUE ANSWER : ? YOUR ANSWER : ?
The sensitivity of human eyes is maximum at Red portion of spectrum Green portion of spectrum Violet portion of spectrum White portion of spectrum TRUE ANSWER : ? YOUR ANSWER : ?
At room temperature the current in an intrinsic semiconductor is due to Holes and electrons Electrons Ions Holes TRUE ANSWER : ? YOUR ANSWER : ?
Work function is the maximum energy required by the fastest electron at 0 K to escape from the metal surface. False True TRUE ANSWER : ? YOUR ANSWER : ?
Piezoelectric quartz crystal resonators find application where Modulation of signal is required Signal amplification is required Signal frequency control is required Rectification of the signal is required TRUE ANSWER : ? YOUR ANSWER : ?
In a bipolar transistor, the emitter base junction has Forward bias Zero or reverse bias Zero bias Reverse bias TRUE ANSWER : ? YOUR ANSWER : ?
In a half wave rectifier, the load current flows Only for the negative half cycle of the input signal Only for the positive half cycle of the input signal For less than fourth cycle For full cycle TRUE ANSWER : ? YOUR ANSWER : ?