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.Management Sciences
Category: Regulated D.C. Power Supply
A Zener voltage regulator will cease to act as a voltage regulator if Zener current becomes______________?
0
A. Less than load current
B. Zero
C. More than load current
D. None of the above
What is true about the breakdown voltage in a Zener diode ?
A. It decreases when load current increases
B. It destroys the diode
C. It equals current times the resistance
D. It is approximately constant
A certain regulator has a no-load voltage of 6 V and a full-load output of 5.82 V. What is the load regulation ?
A. 09%
B. 87 %
C. 72 %
D. None of the above
If the doping level is increased, the breakdown voltage of the Zener_______________?
A. Remains the same
B. Is increased
C. Is decreased
D. None of the above
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 Zener voltage regulator is used for ____________ load currents?
A. High
B. Very high
C. Moderate
D. Small
Commercial power supplies have voltage regulation ______________?
A. of 10%
B. of 15%
C. of 25%
D. within 1%
The rupture of co-valent bonds will occur when the electric field is__________________?
A. 100 V/cm
B. 6 V/cm
C. 1000 V/cm
D. More than 105 V/cm
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