List of top Physics Questions on Transistors asked in MHT CET

In a common emitter transistor amplifier, AC current gain is \(65\), the load resistance is \(5400\,\Omega\) and input resistance of the transistor is \(450\,\Omega\). The voltage gain is

In a transistor, comparing the doping of emitter, base and collector, the part which is heavily doped and that which is lightly doped are respectively

In an NPN transistor, the collector current is 28 mA. If 80% electrons reach the collector, its base current in mA is

A semiconductor X is made by doping a germanium crystal with indium \((Z = 49)\). A second semiconductor Y is made by doping germanium crystal with arsenic \((Z = 33)\). Both are joined end to end and connected to a battery as shown. Which of the following statements is correct?

In a transistor amplifier, a change of 0.2 mA in the base current causes a change of 5 mA in the collector current. If input resistance is \(2 \text{k}\Omega\) and voltage gain is 75, the load resistance used in the circuit is

In common emitter amplifier, a change of \(0.2\) mA in the base current causes a change of \(5\) mA in the collector current. If input resistance is \(2\) k\(\Omega\) and voltage gain is \(75\), the load resistance used in the circuit is

If transistor having \(α = 0.9\), is used in CE configuration, then for a change of \(0.4\) mA in base current, what will be the change in collector current?

In transistor amplifier, base emitter junction is forward biased and collector base junction is reversed biased. The current gain is

In common emitter mode of transistor, the d.c. current gain is 20, the emitter current is 7 mA. The collector current is

In common emitter mode of transistor, the d.c. current gain is \(20\), the emitter current is \(7\) mA. The collector current is

In common emitter transistor amplifier, the output resistance is \(500\) k\(\Omega\) and the current gain \(β = 50\). If power gain of amplifier is \(5\times 10^6\), what is the input resistance?

In a common emitter amplifier configuration, the current gain is 62. The collector resistance and input resistance are 5k$\Omega$ and 500$\Omega$ respectively. If the input voltage is 0.01 V, the output voltage will be ______.

In a common emitter transistor amplifier circuit, the input resistance is 1.8 k$\Omega$ and output is obtained across a load resistance of 9 k$\Omega$. The alternating current gain is 70. Corresponding to an a.c. input voltage of 6 mV, the output voltage will be ______.

For a transistor, $\alpha_{dc}$ and $\beta_{dc}$ are the current ratios, then the value of $\frac{\beta_{dc}-\alpha_{dc}}{\alpha_{dc}\times\beta_{dc}}$ is}

For a common emitter transistor configuration the ratio of \(\frac{I_C}{I_E} = 0.96\), then the current gain in this configuration is

In a CE transistor, a change of $8.0 \text{ mA}$ in the emitter current produces a change of $7.8 \text{ mA}$ in the collector current. What change in the base current is necessary to produce the same change in the collector current?

For a common emitter transistor configuration the ratio of \(\frac{I_C}{I_E} = 0.96\), then the current gain in this configuration is