• HOME
  • QUIZ
  • CONTACT US
EXAMIANS
  • COMPUTER
  • CURRENT AFFAIRS
  • ENGINEERING
    • Chemical Engineering
    • Civil Engineering
    • Computer Engineering
    • Electrical Engineering
    • Mechanical Engineering
  • ENGLISH GRAMMAR
  • GK
  • GUJARATI MCQ

Rectifiers and Converters

Rectifiers and Converters
In a mercury arc rectifier characteristic blue luminosity is due to

colour of mercury
electron streams
ionization
high temperature

ANSWER DOWNLOAD EXAMIANS APP

Rectifiers and Converters
The voltage drop between the anode and cathode, of a mercury arc rectifier comprises of the following

anode drop and cathode drop
cathode drop and arc drop
anode drop, cathode drop and arc drop
anode drop and arc drop

ANSWER DOWNLOAD EXAMIANS APP

Rectifiers and Converters
Mercury, in arc rectifiers, is chosen for cathode because

Its ionization potential is relatively low
All of the listed here
Its atomic weight is quite high
Its boiling point and specific heat are low

ANSWER DOWNLOAD EXAMIANS APP

Rectifiers and Converters
To produce cathode spot in a mercury arc rectifier

tube is evacuated
anode is heated
an auxiliary electrode is used
low mercury vapour pressures are used

ANSWER DOWNLOAD EXAMIANS APP

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

Mechanical rectifiers
Copper oxide rectifiers
Selenium rectifiers
Electrolytic rectifiers

ANSWER DOWNLOAD EXAMIANS APP

Rectifiers and Converters
If cathode and anode connections in a mercury arc rectifier are inter changed

The rectifier will not operate
Both ion and electron streams will move in the same direction
Internal losses will be reduced
The rectifier will operate at reduced efficiency

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON Rectifiers and Converters

DOWNLOAD APP

  • APPLE
    from app store
  • ANDROID
    from play store

SEARCH

LOGIN HERE


  • GOOGLE

FIND US

  • 1.70K
    FOLLOW US
  • EXAMIANSSTUDY FOR YOUR DREAMS.
  • SUPPORT :SUPPORT EMAIL ACCOUNT : examians@yahoo.com

OTHER WEBSITES

  • GUJARATI MCQ
  • ACCOUNTIANS

QUICK LINKS

  • HOME
  • QUIZ
  • PRIVACY POLICY
  • DISCLAIMER
  • TERMS & CONDITIONS
  • CONTACT US
↑