Q. When a dielectric slab is introduced in a parallel plate capacitor, the potential difference between plates will remain uncharged decrease increase become zero Answer: decrease
Q. In the case of a lossy capacitor, its series equivalent resistance value will be small very small large zero Answer: large
In the case of a lossy capacitor, its series equivalent resistance value will be Read More »
Q. The power dissipated in a pure capacitor is zero proportional to applied voltage proportional to value of capacitance both B. and C. above Answer: zero
Q. The sparking between two electrical contacts can be reduced by inserting capacitor in parallel with contacts capacitor in series with each contact resistance in line none of the above Answer: capacitor in parallel with contacts
The sparking between two electrical contacts can be reduced by inserting Read More »
Q. Which of the following capacitors has relatively shorter shelf life ? Mica capacitor Electrolytic capacitor Ceramic capacitor Paper capacitor Answer: Electrolytic capacitor
Which of the following capacitors has relatively shorter shelf life ? Read More »
Q. If A.C. voltage is applied to capacitive circuit, the alternating current can flow in the circuit because varying voltage produces the charging and dicharging currents of high peak value charging current can flow discharge current can flow Answer: varying voltage produces the charging and dicharging currents
Q. Two plates of a parallel plate capacitor after being charged from a constant voltage source are separated apart by means of insulated handles, then the Voltage across the plates increases voltage across the plates decreases charge on the capacitor decreases charge on the capacitor increases Answer: voltage across the plates decreases
Q. The dissipation factor of a good dielectric is of the order of 0.0002 0.002 0.02 0.2 Answer: 0.0002
The dissipation factor of a good dielectric is of the order of Read More »
Q. In a capacitor the electric charge is stored in metal plates dielectric both A. and B. none of the above Answer: dielectric
Q. Which of the following expression is correct for electric field strength ? E = D/E E = D2/t E = jtD E= nD2 Answer: E = D/E
Which of the following expression is correct for electric field strength ? Read More »
