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Electronic Devices and Circuits
Which variety of copper has the best conductivity?
Pure annealed copper
Hard drawn copper
Induction hardened copper
Copper containing traces of silicon
Pure annealed copper
Hard drawn copper
Induction hardened copper
Copper containing traces of silicon
Answer
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Related Question
Electronic Devices and Circuits
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
Antiparallel to magnetic field
Normal to both current and magnetic field
In arbitrary direction
In the direction of current
Antiparallel to magnetic field
Normal to both current and magnetic field
In arbitrary direction
In the direction of current
Answer
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Electronic Devices and Circuits
In the sale of diamonds the unit of weight is carat. One carat is equal to
500 mg
100 mg
200 mg
150 mg
500 mg
100 mg
200 mg
150 mg
Answer
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Electronic Devices and Circuits
If too large current passes through the diode
Excessive heat may damage the diode
Diode will emit light
All holes will freeze
All electrons will leave
Excessive heat may damage the diode
Diode will emit light
All holes will freeze
All electrons will leave
Answer
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Electronic Devices and Circuits
An intrinsic silicon sample has 1 million free electrons at room temperature. As the temperature is increased
The number of free electrons increases but the number of holes decreases
The number of free electrons and holes increase by the same amount
The number of free electrons and holes increase but not by the same amount
The number of free electrons increases
The number of free electrons increases but the number of holes decreases
The number of free electrons and holes increase by the same amount
The number of free electrons and holes increase but not by the same amount
The number of free electrons increases
Answer
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Electronic Devices and Circuits
Which of the following has highest resistivity?
Mica
Air
Mineral oil
Paraffin wax
Mica
Air
Mineral oil
Paraffin wax
Answer
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