For a transistor,the parameter $\beta = 99$. The value of the parameter $\alpha$ is

For a transistor,the current ratio $\alpha_{dc} = \frac{69}{70}$,the current gain $\beta_{dc}$ is

In a transistor,a change of $8.0\, mA$ in the emitter current produces a change of $7.8\, mA$ in the collector current. What change in the base current is necessary to produce the same change in the collector current? (in $\mu A$)

$A$ transistor oscillator is $(i)$ an amplifier with positive feedback,$(ii)$ an amplifier with reduced gain,$(iii)$ the one in which $dc$ supply energy is converted into an output energy. Then

When an $N-P-N$ transistor is used as an amplifier,which of the following occurs?

The phase difference between the input voltage and the output voltage in a common emitter amplifier is (in $^{\circ}$)