100%(9)9 out of 9 people found this document helpful
This preview shows page 4 - 7 out of 9 pages.
Question-8The dynamic resistance can be important when a diode is(a)reverse-biased(b)forward-biased(c)in reverse breakdown(d)unbiasedAnswer-B The resistance of a forward-biased diode is called the dynamicor ac resistance.Question-10Ideally, a diode can be represented by a
Question-12In the complete diode model,Question-14When a 60 Hz sinusoidal voltage is applied to the input of a half-wave rectifier, the output frequency isQuestion-16For the circuit in Question 15, the diode must be able to withstand a reverse voltage of(a)10 V(b)5 V(c)20 V(d)3.18 VAnswer-C Guessed… Was not sure about this one.Question-18When a 60 Hz sinusoidal voltage is applied to the input of a full-wave rectifier, the output frequency isQuestion-20
When the peak output voltage is 100 V, the PIV for each diode in a center-tapped full-wave rectifier is (neglecting the diode drop)Question-22The ideal dc output voltage of a capacitor-input filter is equal toQuestion-24A 60 V peak full-wave rectified voltage is applied to a capacitor-input filter. If f= 120 Hz, RL= 10 k Ω, and 10 μF, the ripple voltage isC= (a)0.6 V(b)6 mV(c)5.0 V(d)2.88 VVRPP = (1/f*RL*C)(VPrect)VRPP = (1/120Hz*10k*10F)(60V)VRPP = (0.083)(60V) = 4.98VAnswer-C Used the formula above from the book.