A cascade of three identical modulo -$$5$$ counters has an over all modulus of

An output device is interfaced with $$8$$ bit microprocessor $$8085$$$$A.$$ The interfacing circuit is shown in figure

The interfacing circuit makes use of $$3$$ line to $$8$$ line decoder having $$3$$ enable lines $${E_1}\,\,\overline E {}_2,$$ $$\,\overline E {}_3$$. The address of the device is

C₀ is the capacitance of a parallel plate capacitor with air as dielectric (as in figure (a)). If, half of the entire gap as shown in figure (b) is filled with a dielectric of permittivity $$\in_r$$ , the expression for the modified capacitance is

An incandescent lamp is marked 40W, 240V. If resistance at room temperature $$\left(26^\circ\mathrm C\right)\;\mathrm{is}\;120\mathrm\Omega$$ and temperature coefficient of resistance is $$4.5\;\times\;10^{-3}/^\circ C$$ , then its ‘ON’ state filament temperature in ^oC is approximately ________.