Related Questions

The PIV rating of each diode in a bridge rectifier is ___________ that of the equivalent centre-tap rectifier
A one-half
B the same as
C twice
D four times
If the PIV rating of a diode is exceeded, ___________
A the diode conducts poorly
B the diode is destroyed
C the diode behaves like a zener diode
D none of the above
If the arrow of crystal diode symbol is positive w.r.t. bar, then diode is ___________ biased.
A forward
B reverse
C either forward or reverse
D none of the above
The doping level in a zener diode is ___________ that of a crystal diode
A the same as
B less than
C more than
D none of the above
ফুল-ওয়েভ ব্রিজ রেক্টিফায়ারের RMS আউটপুট ভোল্টেজ 20V হলে প্রতি ডায়োডের পিক ইনভার্স ভোল্টেজ (PIV) কত হবে?
A 20V
B 28.3V
C 40V
D 56.6V
Quartz crystal is most commonly used in crystal oscillators because ___________
A It has superior electrical properties
B It is easily available
C It is quite inexpensive
D None of the above
The crystal oscillator frequency is very stable due to ___________ of the crystal
A Rigidity
B Vibrations
C Low Q
D High Q
If the crystal frequency changes with temperature, we say that crystal has ___________ temperature coefficient
A Positive
B Zero
C Negative
D None of the above
The ratio of the actual vacuum to the ideal vacuum in a condenser is called
A Condenser efficiency
B Vacuum efficiency
C Nozzle efficiency
D Boiler efficiency
In most of the vacuum crystalliser, vacuum is generally produced by means of a
A Suction pump
B Compressed air jet
C Steam jet ejector with a barometric condenser
D None of these

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