A. 10 O
B. 50 O
C. 25 O
D. 40 O
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Related Mcqs:
- Two similar 15 V Zeners are connected in series. What is the regulated output voltage ?
A. 15 V
B. 5 V
C. 30 V
D. 45 V - A 5 mA changes in Zener current produces a 50 mA change in Zener voltage. What is the Zener impedance ?
A. 1 O
B. 1 O
C. 100 O
D. 10 O - For increasing the voltage rating, zeners are connected in_____________?
A. Parallel
B. Series-parallel
C. Series
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% - 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 - 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 - An ideal regulated power supply is one which has voltage regulation of________________?
A. 0%
B. 5%
C. 10%
D. 1% - 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
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