In a npn transistor,_____________are the minority carriers?
A. free electrons
B. holes
C. donor ions
D. acceptor ions
Month: December 2018
The input impedance of a transistor is___________?
The input impedance of a transistor is___________?
A. high
B. low
C. very high
D. almost zero
The value of a of a transistor is_____________?
The value of a of a transistor is_____________?
A. more than 1
B. less than 1
C. 1
D. none of the above
____________ rectifier has the lowest forward resistance?
____________ rectifier has the lowest forward resistance?
A. solid state
B. vacuum tube
C. gas tube
D. none of the above
In a tansistor, IC = 100 mA and IE = 100.2 mA. The value of ß is____________?
In a tansistor, IC = 100 mA and IE = 100.2 mA. The value of ß is____________?
A. 100
B. 50
C. about 1
D. 200
A zener diode is destroyed if it______________?
A zener diode is destroyed if it______________?
A. is forward biased
B. is reverse biased
C. carrier more than rated current
D. none of the above
The relation between ß and a is______________?
The relation between ß and a is______________?
A. ß = 1 / (1 – a )
B. ß = (1 – a ) / a
C. ß = a / (1 – a )
D. ß = a / (1 + a )
The doping level in a zener diode is______________ that of a crystal diode?
The dog level in a zener diode is______________ that of a crystal diode?
A. the same as
B. less than
C. more than
D. none of the above
The phase difference between the input and output voltages in a common base arrangement is___________?
The phase difference between the input and output voltages in a common base arrangement is___________?
A. 180o
B. 90o
C. 270o
D. 0o
When a crystal diode is used as a rectifier, the most important consideration is ____________?
When a crystal diode is used as a rectifier, the most important consideration is ____________?
A. forward characteristic
B. dog level
C. reverse characteristic
D. PIC rating