Related Questions

For the same secondary voltage, the output voltage from a centre-tap rectifier is ___________ than that of bridge rectifier
A twice
B thrice
C four time
D one-half
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
The scale of a rectifier instrument is
A linear
B non-linear
C either (A) or (B)
D neither (A) nor (B)
An instrument store gives a 10% discount to all students off the original cost of an instrument. During a school sale, an additional 15% is taken off the discounted price. Rahim, a student at the local high school, purchases a flute for Tk. 306. What was its original cost before discount?
A Tk. 400
B Tk. 408
C Tk. 375
D Tk. 425
An instrument store gives a 10% discount to all students of the original cost of an instrument. During a school sale an additional 15% is taken off the discounted price. Rahim, a student at the local high school, purchases a flute for Tk 306. How much did it originally cost?
A Tk 400
B Tk 408
C Tk 375
D Tk 425
If the instrument is to have a wide range, the instrument should have
A Linear scale
B Square-law scale
C Exponential scale
D Logarithmic scale
Addition polymerisation takes place either by a free radical mechanism or ionic machanism depending on the reagents used. Free radical polymerisation is catelyzed by __________ , which decompose to give free radicals.
A Organic peroxides
B Sulphuric acid
C Hydroflouric acid
D None of these
Copper oxide rectifier is usually designed not to operate above
A 10°C
B 20°C
C 30°C
D 45°C
Which of the following is the loss within the mercury arc rectifier chamber?
A Voltage drop in arc
B Voltage drop at the anode
C Voltage drop at the cathode
D All of the above
The voltage drop at anode, in a mercury arc rectifier is due to
A self restoring property of mercury
B high ionization potential
C energy spent in overcoming the electrostatic field
D high temperature inside the rectifier

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