2. The function of a bleeder resistor in a power supply is :
(a)the same as that of load resistor (b)to ensure a minimum current drain in the circuit (c)to increase the output dc voltage (d)to increase the output current
Answer
Answer : (b)
Explanation
Explanation : No answer description available for this question. Let us discuss.
Regulated Power Supplies » Exercise - 3 101. In a simple series regulator circuit, which of the following components is the controlling element? (a) Load resistor (b) Zener diode (c) Transistor Q1 (d) None of the above 102. What regulated output voltage is provided for the following circuit elements: R1 = 15 kΩ, R2 = 35 kΩ, and VZ = 11.2 V? (a) 16.50 V (b) 17 V (c) 17.35 V (d) 18.25 V 103. Nota 104. Which component(s) set(s) the voltage across the load in a basic transistor shunt regulator? (a) Zener diode (b) Transistor base-emitter voltage (c) Both the Zener diode and the transistor base-emitter voltage (d) None of the above 105. In a full-wave rectifier, if no load were connected across the capacitor, the output voltage would ideally be a(n) ________. (a) ac voltage (b) constant dc voltage (c) pulsating dc voltage (d) ramp voltage 106. The output of a loaded power supply is ________ that of the unloaded. (a) the same as (b) larger than (c) smaller than (d) None of the above 107. The frequency of the output voltage of a full-wave rectifier is ________ the frequency of its input voltage. (a) the same as (b)…
5555555555 74. ________ regulation can be defined as the percentage change in the output voltage for a given change in load current. (a) Line (b) Load (c) both (a) and (b) (d) neither (a) and (b)
5555555555 46. The maximum output voltage of a certain low-pass filter is 15 V. The output voltage at the critical frequency is ________. (a) 0 V (b) 15 V (c) 10.60 V (d) 21.21 V
Regulated Power Supplies » Exercise - 12. In an unregulated power supply, if load current increases, the output voltage ........... (a) remains the same (b) decreases (c) increases (d) none of the above