A. 09%
B. 87 %
C. 72 %
D. None of the above
Related Mcqs:
- A power supply has a voltage regulation of 1%. If the no-load voltage is 20 V, what is the full-load voltage ?
A. 8 V
B. 7 V
C. 6 V
D. 2 V - A Zener voltage regulator will cease to act as a voltage regulator if Zener current becomes______________?
A. Less than load current
B. Zero
C. More than load current
D. None of the above - A power supply can deliver a maximum rated current of 0.5 A at full-load output voltage of 20 V. What is the minimum load resistance that you can connect across the supply?
A. 10 O
B. 20 O
C. 15 O
D. 40 O - In a Zener voltage regulator, the changes in load current produce changes in _________________?
A. Zener current
B. Zener voltage
C. Zener voltage as well as Zener current
D. None of the above - A Zener voltage regulator is used for ____________ load currents?
A. High
B. Very high
C. Moderate
D. Small - If the load resistance decreases in a Zener regulator, then Zener current ______________?
A. Decreases
B. Stays the same
C. Increases
D. None of the above - In an unregulated power supply, if input a.c. voltage increases, the output voltage _______________?
A. Increases
B. Decreases
C. Remains the same
D. None of the above - If the input a.c. voltage to regulated or ordinary power supply increases by 5% what will be the approximate change in d.c. output voltage?
A. 10%
B. 20%
C. 15%
D. 5% - 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 - If the load current drawn by unregulated power supply increases, the d.c. output voltage _____________?
A. Increases
B. Decreases
C. Stays the same
D. None of the above