The circuit in Fig. shows zener-regulated dc power supply. The zener diode is ideal. The minimum value of RL down to which the output voltage remains constant is

The circuit in Fig. shows zener-regulated dc power supply. The zener d

1.	The circuit in Fig. shows zener-regulated dc power supply. The zener diode is ideal. The minimum value of R_L down to which the output voltage remains constant is
A.	27
B.	45
C.	15
D.	24
Answer» C. 15

Discussion

No Comment Found

Related MCQs

In given fig., zero centre and ideal PMMC voltmeters M1 and M2 will read:
In given fig. capacitor C is initially charged with voltage V0 with upper plate positive. Switch S is closed at t = 0. At t = 0+, VC and i are respectively:
The speed and torque of induction motors can be varied by which of the following means: 1. Stator voltage control 2. Rotor voltage control 3. Frequency control
MOS controlled thyristors have: 1. Low forward voltage drop during conduction 2. Fast turn-on and turn-off time 3. Low switching losses 4. High reverse voltage blocking capability 5. Low gate input impedance Which are correct?
For a sinusoidal input voltage Vs = Vm sin t = 2 Vs sin t If the input voltage is connected to load for n cycles and is disconnected for m cycles, the rms output voltage is given by V0 = Vs K Where k is duty cycle which is given by:
In given fig., if C = 8 F and L = 0 2 mH, the peak current handled by diode is
In given fig., V1, V2 and V3 are zero centre PMMC voltmeters. The circuit is initially relaxed. Switch S is closed at t = 0. In steady state, readings of voltmeters V1, V2 and V3 are respectively:
Consider the following statements: The overlap angle of a phase controlled converter would increase on increasing the 1. Supply voltage 2. Supply frequency 3. Load current 4. Source inductance Of these statements which are correct:
For thyristor, pulse triggering is preferred to d.c. triggering because 1. Gate dissipation is low 2. Pulse system is simpler 3. Trigging signal is required for a very short duration
Consider the following statements about SCR 1. For Normal SCR, Turn-on time is more than turn off time 2. A forward voltage can be applied to an SCR after its gate recovery time 3. Static V I characteristics of an SCR with different Gate drives applied to the Gate are indicated by Vg2 > Vg1 > Vg0

The circuit in Fig. shows zener-regulated dc power supply. The zener diode is ideal. The minimum value of RL down to which the output voltage remains constant is

Discussion

No Comment Found

Related MCQs

Reply to Comment

The circuit in Fig. shows zener-regulated dc power supply. The zener diode is ideal. The minimum value of R_L down to which the output voltage remains constant is