The potential drop in the arc, in a mercury arc rectifier, varies_____________?

Byadmin December 16, 2018August 11, 2021

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

Rectifiers and Converters

Which of the following rectifiers are primarily used for charging of low voltage batteries from AC supply ?

Which of the following rectifiers are primarily used for charging of low voltage batteries from AC supply ?

A. Mechanical rectifiers
B. Copper oxide rectifiers
C. Selenium rectifiers
D. Electrolytic rectifiers
E. Mercury arc rectifiers

Read More Which of the following rectifiers are primarily used for charging of low voltage batteries from AC supply ?
Rectifiers and Converters

In which of the following appUcations, direct current is absolutely essential ?

In which of the following appUcations, direct current is absolutely essential ?

A. Illumination
B. Electrolysis
C. Variable speed operation
D. Traction

Read More In which of the following appUcations, direct current is absolutely essential ?
Rectifiers and Converters

In a mercury arc rectifier________ flow from anode to cathode

In a mercury arc rectifier________ flow from anode to cathode

A. ions
B. electrons
C. ions and electrons
D. any of the above

Read More In a mercury arc rectifier________ flow from anode to cathode
Rectifiers and Converters

The voltage drop between the anode and cathode, of a mercury arc rectifier comprises of the following_____________?

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

Read More The voltage drop between the anode and cathode, of a mercury arc rectifier comprises of the following_____________?
Rectifiers and Converters

The metal rectifiers are preferred to valve rectifiers due to which of the following advantages ?

The metal rectifiers are preferred to valve rectifiers due to which of the following advantages ?

A. They are mechanically strong
B. They do not require any voltage for filament heating
C. Both (A) and (B)
D. None of the above

Read More The metal rectifiers are preferred to valve rectifiers due to which of the following advantages ?
Rectifiers and Converters

In mercury arc rectifiers having grid, the arc can be struck between anode and cathode only when the grid attains a certain potential, this potential being known as______________?

In mercury arc rectifiers having grid, the arc can be struck between anode and cathode only when the grid attains a certain potential, this potential being known as______________?

A. maximum grid voltage
B. critical grid voltage
C. any of the above
D. none of the above

Read More In mercury arc rectifiers having grid, the arc can be struck between anode and cathode only when the grid attains a certain potential, this potential being known as______________?

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