• 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
The efficiency of the copper oxide rectifier seldom exceeds

85 to 90%
90 to 95%
65 to 75%
80 to 85%

ANSWER DOWNLOAD EXAMIANS APP

Rectifiers and Converters
In which of the following applications, direct current is absolutely essential ?

Traction
Variable speed operation
Electrolysis
Illumination

ANSWER DOWNLOAD EXAMIANS APP

Rectifiers and Converters
The ionization potential of mercury is approximately

None of the listed here
10.4 V
5.4 V
16.4 V

ANSWER DOWNLOAD EXAMIANS APP

Rectifiers and Converters
When a rectifier is loaded which of the following voltage drops take place ?

Voltage drop in transformer reactance
All of the listed here
Voltage drop in resistance of transformer and smoothing chokes
Arc voltage drop

ANSWER DOWNLOAD EXAMIANS APP

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

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

ANSWER DOWNLOAD EXAMIANS APP

Rectifiers and Converters
The applications of selenium rectifiers are usually limited to potential of

20 V
30 V
10 V
100 V

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
↑