Related Questions

The potential drop in the arc, in a mercury arc rectifier, varies
A 0.05 V to 0.2 V per cm length of the arc
B 0.5 V to 1.5 V per cm length of the arc
C 2 V to 3.5 V per cm length of the arc
D none of the above
If a gas metal arc process uses a low arc voltage and the arc is continuously interrupted as the molten electrode metal fills up the arc gap is known as
A ARC
B Short ARC
C ARC length
D ARC blow
A hawker takes 1.25 hours to deliver newspapers on his route. Another hawker takes 15 minutes longer to deliver these papers on the same route. How long would it take to deliver the papers if both of them worked together?
A 22.25 min
B 37.5 min
C 40 min
D 65 min
A hawker takes 1.25 hours to deliver newpaper on his route. Another howker takes 15 minutes longer to deliver these papers on the same route. How long would it take to deliver the papers if both of them worked together?
A 22.25 minute
B 37.5 minutes
C 40 minutes
D 65 minitues
In a glass bulb mercury arc rectifier the maximum current rating is restricted to
A 2000 A
B 1500 A
C 1000 A
D 500 A
Capillary rise of mercury in a small diameter tube is proportional of (where, d = mercury of the rube, σ = surface tension of mercury)
A d
B 1/d
C σ
D 1/σ
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 between the anode and cathode, of a mercury arc rectifier comprises of the following
A anode drop and cathode drop
B anode drop and arc drop
C cathode drop and arc drop
D anode drop, cathode drop and arc drop
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
In a mercury arc rectifier, the anode is usually made of
A copper
B aluminium
C silver
D graphite
E tungsten

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