Rectifiers And Converters MCQ Questions & Answers | Electrical Engineering Page-4 section-1

31.
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

Answer & Solution Discuss in Board Save for Later

32.
A rotary converter in general construction and design, is more or less like

A. a transformer

B. an induction motor

C. an alternator

D. any 'C. machine

Answer & Solution Discuss in Board Save for Later

33.
The applications of selenium rectifiers are usually limited to potential of

A. 10 V

B. 30 V

C. 60 V

D. 100 V

E. 200 V

Answer & Solution Discuss in Board Save for Later

34.
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

Answer & Solution Discuss in Board Save for Later

35.
In a mercury arc rectifier characteristic blue luminosity is due to

A. colour of mercury

B. ionization

C. high temperature

D. electron streams

Answer & Solution Discuss in Board Save for Later

36.
Copper oxide rectifier is usually designed not to operate above

A. 10°C

B. 20°C

C. 30°C

D. 45°C

Answer & Solution Discuss in Board Save for Later

37.
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

Answer & Solution Discuss in Board Save for Later

38.
Which of the following are the applications of D.C. system?

A. Battery charging work

B. Arc welding

C. Electrolytic and electro-chemical processes

D. Arc lamps for search lights

E. All of the above

Answer & Solution Discuss in Board Save for Later

39.
Glass rectifiers are usually made into units capable of D.C. output (maximum continuous rating) of

A. 100 A at 100 V

B. 200 A at 200 V

C. 300 A at 300 V

D. 400 A at 400 V

E. 500 A at 500 V

Answer & Solution Discuss in Board Save for Later

40.
Which of the following AC. motors is usually used in large motor-generator sets?

A. Synchronous motor

B. Squirrel cage induction motor

C. Slip ring induction motor

D. Any of the above

Answer & Solution Discuss in Board Save for Later

Rectifiers And Converters MCQ Questions & Answers | Electrical Engineering

31. In a glass bulb mercury arc rectifier the maximum current rating is restricted to

Answer & Solution

32. A rotary converter in general construction and design, is more or less like

Answer & Solution

33. The applications of selenium rectifiers are usually limited to potential of

Answer & Solution

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

Answer & Solution

35. In a mercury arc rectifier characteristic blue luminosity is due to

Answer & Solution

36. Copper oxide rectifier is usually designed not to operate above

Answer & Solution

37. 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

Answer & Solution

38. Which of the following are the applications of D.C. system?

Answer & Solution

39. Glass rectifiers are usually made into units capable of D.C. output (maximum continuous rating) of

Answer & Solution

40. Which of the following AC. motors is usually used in large motor-generator sets?

Answer & Solution

31.
In a glass bulb mercury arc rectifier the maximum current rating is restricted to

32.
A rotary converter in general construction and design, is more or less like

33.
The applications of selenium rectifiers are usually limited to potential of

34.
The metal rectifiers are preferred to valve rectifiers due to which of the following advantages ?

35.
In a mercury arc rectifier characteristic blue luminosity is due to

36.
Copper oxide rectifier is usually designed not to operate above

37.
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

38.
Which of the following are the applications of D.C. system?

39.
Glass rectifiers are usually made into units capable of D.C. output (maximum continuous rating) of

40.
Which of the following AC. motors is usually used in large motor-generator sets?