Junction Transistors (npn, pnp)
Semiconductor Electronics Material Devices and Simple Circuits

151036 Three amplifiers with voltage gains 10,20 and 30 are connected in series. If the input signal has a peak value of \(1 \mathrm{mV}\) then the peak value of the output voltage is

1 \(6 \mathrm{~V}\)
2 \(60 \mathrm{~V}\)
3 \(0.6 \mathrm{~V}\)
4 \(0.06 \mathrm{~V}\)
Semiconductor Electronics Material Devices and Simple Circuits

151037 In the common base configuration, a transistor has current amplification factor 0.95 . If the transistor is used in common-emitter configuration and base current changes by \(2 \mu \mathrm{A}\), then the change in the collector current is

1 \(19 \mu \mathrm{A}\)
2 \(0.91 \mu \mathrm{A}\)
3 \(1.9 \mu \mathrm{A}\)
4 \(38 \mu \mathrm{A}\)
Semiconductor Electronics Material Devices and Simple Circuits

151038 An n-p-n transistor is connected in commonemitter configuration as shown in the figure. If the collector current is \(5 \mathrm{~mA}, \mathrm{~V}_{\mathrm{BE}}=0.6 \mathrm{~V}, \mathrm{~V}_{\mathrm{CE}}\) \(=3 \mathrm{~V}\) and common-emitter current amplification factor is 50 , then the values of \(R_1\) and \(\mathrm{R}_2\) are respectively.
original image

1 \(1 \mathrm{k} \Omega, 74 \mathrm{k} \Omega\)
2 \(74 \mathrm{k} \Omega, 1 \mathrm{k} \Omega\)
3 \(37 \mathrm{k} \Omega, 2 \mathrm{k} \Omega\)
4 \(2 \mathrm{k} \Omega, 37 \mathrm{k} \Omega\)
Semiconductor Electronics Material Devices and Simple Circuits

151040 In a Common - base mode of a transistor, the collector current is \(5.488 \mathrm{~mA}\) for an emitter current of \(5.60 \mathrm{~mA}\). The value of the base current amplification factor \((\beta)\) will be

1 49
2 50
3 51
4 48
Semiconductor Electronics Material Devices and Simple Circuits

151043 A change of \(8.0 \mathrm{~mA}\) in the emitter current brings a change of \(7.9 \mathrm{~mA}\) in the collector current. The values of \(\alpha\) and \(\beta\) are

1 \(0.99,90\)
2 \(0.96,79\)
3 \(0.97,99\)
4 \(0.99,79\)
Semiconductor Electronics Material Devices and Simple Circuits

151036 Three amplifiers with voltage gains 10,20 and 30 are connected in series. If the input signal has a peak value of \(1 \mathrm{mV}\) then the peak value of the output voltage is

1 \(6 \mathrm{~V}\)
2 \(60 \mathrm{~V}\)
3 \(0.6 \mathrm{~V}\)
4 \(0.06 \mathrm{~V}\)
Semiconductor Electronics Material Devices and Simple Circuits

151037 In the common base configuration, a transistor has current amplification factor 0.95 . If the transistor is used in common-emitter configuration and base current changes by \(2 \mu \mathrm{A}\), then the change in the collector current is

1 \(19 \mu \mathrm{A}\)
2 \(0.91 \mu \mathrm{A}\)
3 \(1.9 \mu \mathrm{A}\)
4 \(38 \mu \mathrm{A}\)
Semiconductor Electronics Material Devices and Simple Circuits

151038 An n-p-n transistor is connected in commonemitter configuration as shown in the figure. If the collector current is \(5 \mathrm{~mA}, \mathrm{~V}_{\mathrm{BE}}=0.6 \mathrm{~V}, \mathrm{~V}_{\mathrm{CE}}\) \(=3 \mathrm{~V}\) and common-emitter current amplification factor is 50 , then the values of \(R_1\) and \(\mathrm{R}_2\) are respectively.
original image

1 \(1 \mathrm{k} \Omega, 74 \mathrm{k} \Omega\)
2 \(74 \mathrm{k} \Omega, 1 \mathrm{k} \Omega\)
3 \(37 \mathrm{k} \Omega, 2 \mathrm{k} \Omega\)
4 \(2 \mathrm{k} \Omega, 37 \mathrm{k} \Omega\)
Semiconductor Electronics Material Devices and Simple Circuits

151040 In a Common - base mode of a transistor, the collector current is \(5.488 \mathrm{~mA}\) for an emitter current of \(5.60 \mathrm{~mA}\). The value of the base current amplification factor \((\beta)\) will be

1 49
2 50
3 51
4 48
Semiconductor Electronics Material Devices and Simple Circuits

151043 A change of \(8.0 \mathrm{~mA}\) in the emitter current brings a change of \(7.9 \mathrm{~mA}\) in the collector current. The values of \(\alpha\) and \(\beta\) are

1 \(0.99,90\)
2 \(0.96,79\)
3 \(0.97,99\)
4 \(0.99,79\)
Semiconductor Electronics Material Devices and Simple Circuits

151036 Three amplifiers with voltage gains 10,20 and 30 are connected in series. If the input signal has a peak value of \(1 \mathrm{mV}\) then the peak value of the output voltage is

1 \(6 \mathrm{~V}\)
2 \(60 \mathrm{~V}\)
3 \(0.6 \mathrm{~V}\)
4 \(0.06 \mathrm{~V}\)
Semiconductor Electronics Material Devices and Simple Circuits

151037 In the common base configuration, a transistor has current amplification factor 0.95 . If the transistor is used in common-emitter configuration and base current changes by \(2 \mu \mathrm{A}\), then the change in the collector current is

1 \(19 \mu \mathrm{A}\)
2 \(0.91 \mu \mathrm{A}\)
3 \(1.9 \mu \mathrm{A}\)
4 \(38 \mu \mathrm{A}\)
Semiconductor Electronics Material Devices and Simple Circuits

151038 An n-p-n transistor is connected in commonemitter configuration as shown in the figure. If the collector current is \(5 \mathrm{~mA}, \mathrm{~V}_{\mathrm{BE}}=0.6 \mathrm{~V}, \mathrm{~V}_{\mathrm{CE}}\) \(=3 \mathrm{~V}\) and common-emitter current amplification factor is 50 , then the values of \(R_1\) and \(\mathrm{R}_2\) are respectively.
original image

1 \(1 \mathrm{k} \Omega, 74 \mathrm{k} \Omega\)
2 \(74 \mathrm{k} \Omega, 1 \mathrm{k} \Omega\)
3 \(37 \mathrm{k} \Omega, 2 \mathrm{k} \Omega\)
4 \(2 \mathrm{k} \Omega, 37 \mathrm{k} \Omega\)
Semiconductor Electronics Material Devices and Simple Circuits

151040 In a Common - base mode of a transistor, the collector current is \(5.488 \mathrm{~mA}\) for an emitter current of \(5.60 \mathrm{~mA}\). The value of the base current amplification factor \((\beta)\) will be

1 49
2 50
3 51
4 48
Semiconductor Electronics Material Devices and Simple Circuits

151043 A change of \(8.0 \mathrm{~mA}\) in the emitter current brings a change of \(7.9 \mathrm{~mA}\) in the collector current. The values of \(\alpha\) and \(\beta\) are

1 \(0.99,90\)
2 \(0.96,79\)
3 \(0.97,99\)
4 \(0.99,79\)
Semiconductor Electronics Material Devices and Simple Circuits

151036 Three amplifiers with voltage gains 10,20 and 30 are connected in series. If the input signal has a peak value of \(1 \mathrm{mV}\) then the peak value of the output voltage is

1 \(6 \mathrm{~V}\)
2 \(60 \mathrm{~V}\)
3 \(0.6 \mathrm{~V}\)
4 \(0.06 \mathrm{~V}\)
Semiconductor Electronics Material Devices and Simple Circuits

151037 In the common base configuration, a transistor has current amplification factor 0.95 . If the transistor is used in common-emitter configuration and base current changes by \(2 \mu \mathrm{A}\), then the change in the collector current is

1 \(19 \mu \mathrm{A}\)
2 \(0.91 \mu \mathrm{A}\)
3 \(1.9 \mu \mathrm{A}\)
4 \(38 \mu \mathrm{A}\)
Semiconductor Electronics Material Devices and Simple Circuits

151038 An n-p-n transistor is connected in commonemitter configuration as shown in the figure. If the collector current is \(5 \mathrm{~mA}, \mathrm{~V}_{\mathrm{BE}}=0.6 \mathrm{~V}, \mathrm{~V}_{\mathrm{CE}}\) \(=3 \mathrm{~V}\) and common-emitter current amplification factor is 50 , then the values of \(R_1\) and \(\mathrm{R}_2\) are respectively.
original image

1 \(1 \mathrm{k} \Omega, 74 \mathrm{k} \Omega\)
2 \(74 \mathrm{k} \Omega, 1 \mathrm{k} \Omega\)
3 \(37 \mathrm{k} \Omega, 2 \mathrm{k} \Omega\)
4 \(2 \mathrm{k} \Omega, 37 \mathrm{k} \Omega\)
Semiconductor Electronics Material Devices and Simple Circuits

151040 In a Common - base mode of a transistor, the collector current is \(5.488 \mathrm{~mA}\) for an emitter current of \(5.60 \mathrm{~mA}\). The value of the base current amplification factor \((\beta)\) will be

1 49
2 50
3 51
4 48
Semiconductor Electronics Material Devices and Simple Circuits

151043 A change of \(8.0 \mathrm{~mA}\) in the emitter current brings a change of \(7.9 \mathrm{~mA}\) in the collector current. The values of \(\alpha\) and \(\beta\) are

1 \(0.99,90\)
2 \(0.96,79\)
3 \(0.97,99\)
4 \(0.99,79\)
Semiconductor Electronics Material Devices and Simple Circuits

151036 Three amplifiers with voltage gains 10,20 and 30 are connected in series. If the input signal has a peak value of \(1 \mathrm{mV}\) then the peak value of the output voltage is

1 \(6 \mathrm{~V}\)
2 \(60 \mathrm{~V}\)
3 \(0.6 \mathrm{~V}\)
4 \(0.06 \mathrm{~V}\)
Semiconductor Electronics Material Devices and Simple Circuits

151037 In the common base configuration, a transistor has current amplification factor 0.95 . If the transistor is used in common-emitter configuration and base current changes by \(2 \mu \mathrm{A}\), then the change in the collector current is

1 \(19 \mu \mathrm{A}\)
2 \(0.91 \mu \mathrm{A}\)
3 \(1.9 \mu \mathrm{A}\)
4 \(38 \mu \mathrm{A}\)
Semiconductor Electronics Material Devices and Simple Circuits

151038 An n-p-n transistor is connected in commonemitter configuration as shown in the figure. If the collector current is \(5 \mathrm{~mA}, \mathrm{~V}_{\mathrm{BE}}=0.6 \mathrm{~V}, \mathrm{~V}_{\mathrm{CE}}\) \(=3 \mathrm{~V}\) and common-emitter current amplification factor is 50 , then the values of \(R_1\) and \(\mathrm{R}_2\) are respectively.
original image

1 \(1 \mathrm{k} \Omega, 74 \mathrm{k} \Omega\)
2 \(74 \mathrm{k} \Omega, 1 \mathrm{k} \Omega\)
3 \(37 \mathrm{k} \Omega, 2 \mathrm{k} \Omega\)
4 \(2 \mathrm{k} \Omega, 37 \mathrm{k} \Omega\)
Semiconductor Electronics Material Devices and Simple Circuits

151040 In a Common - base mode of a transistor, the collector current is \(5.488 \mathrm{~mA}\) for an emitter current of \(5.60 \mathrm{~mA}\). The value of the base current amplification factor \((\beta)\) will be

1 49
2 50
3 51
4 48
Semiconductor Electronics Material Devices and Simple Circuits

151043 A change of \(8.0 \mathrm{~mA}\) in the emitter current brings a change of \(7.9 \mathrm{~mA}\) in the collector current. The values of \(\alpha\) and \(\beta\) are

1 \(0.99,90\)
2 \(0.96,79\)
3 \(0.97,99\)
4 \(0.99,79\)