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For a power transistor, if the forward current gain α = 0.97, then β = ?
d Explanation: Use the relation α = β/(β+1).
d
See lessExplanation: Use the relation α = β/(β+1).
The value of β is given by the expression
a Explanation: Collector current by the base current is beta, its value is in the range 50 to 300 .
a
See lessExplanation: Collector current by the base current is beta, its value is in the range 50 to 300 .
The forward current gain α is given by
b Explanation: Collector current by emitter current is the current gain, its value is close to one but never greater than.
b
See lessExplanation: Collector current by emitter current is the current gain, its value is close to one but never greater than.
For a power transistor, if the base current IB is increased keeping VCE constant, then
a Explanation: Ic is directly proportional to Ic.
a
See lessExplanation: Ic is directly proportional to Ic.
In a power transistor, the IB vs VBE curve is
c Explanation: The B-E junction of a BJT resembles a p-n junction diode, hence the curve.
c
See lessExplanation: The B-E junction of a BJT resembles a p-n junction diode, hence the curve.
In a power transistor, _________ is the controlling parameter.
c Explanation: The base current controls the collector current. Hence, the base current Ib is the controlling parameter
c
See lessExplanation: The base current controls the collector current. Hence, the base current Ib is the controlling parameter
A power transistor is a _________ device.
d Explanation: Power transistor is simply many BJT’s connected in series parallel on a single silicon chip for power applications. It is a three terminal, bipolar, current controlled device.
d
See lessExplanation: Power transistor is simply many BJT’s connected in series parallel on a
single silicon chip for power applications. It is a three terminal, bipolar, current controlled device.
In a power transistor, ____ is the controlled parameter.
d Explanation: The collector current is the controlled parameter.
d
See lessExplanation: The collector current is the controlled parameter.
A power transistor is a
b Explanation: It has three layers p-n-p or n-p-n forming two p-n junctions.
b
See lessExplanation: It has three layers p-n-p or n-p-n forming two p-n junctions.
Which of the following devices does not belong to the transistor family?
c Explanation: GTO is gate turn off transistor, it belongs to the Thyristor family. All the other devices belong to the transistor family.
c
See lessExplanation: GTO is gate turn off transistor, it belongs to the Thyristor family. All the
other devices belong to the transistor family.