the transformer decreases the power whereas the amplifier keeps the power constant.

the transformer increases the power whereas the amplifier decreases the power.

the amplifier increases the power but the transformer can not increase the power.

the amplifier decreases the power but the transformer keeps the power constant.

$\mathrm{n}_{\mathrm{e}}=\mathrm{n}_{\mathrm{h}}$

$n_h \gg n_e$

$\mathrm{n}_{\mathrm{h}} \ll \mathrm{n}_{\mathrm{e}}$

$\mathrm{n}_{\mathrm{h}}=\mathrm{n}_{\mathrm{e}}=0$

$\quad \mathrm{Y}=\overline{\mathrm{A}} \cdot(\overline{\mathrm{B}+\mathrm{C}})$

$\mathrm{Y}=(\overline{\mathrm{A} \cdot \mathrm{B}})+(\overline{\mathrm{B} \cdot \mathrm{C}})$

$ \mathrm{Y}=(\overline{\mathrm{A}+\mathrm{B}}) \cdot(\overline{\mathrm{B}+\mathrm{C}})$

$Y=(A+B) \cdot C$

increases, increases.

decreases, increases.

increases, decreases.

decreases, decreases.