AC Voltage Controllers Objective Questions – 1

AC Voltage Controllers Objective Questions

Power Electronics Objective Questions & Answers

0%

In AC voltage controllers the

variable ac with fixed frequency is obtained

variable ac with variable frequency is obtained

variable dc with fixed frequency is obtained

variable dc with variable frequency is obtained

Correct!

Wrong!

-

Continue >>

Earlier then the semiconductor technology, ___________ devices were used for voltage control applications.

tap changing transformer

induction machine

cycloconverters

vacuum tubes

Correct!

Wrong!

-

Continue >>

AC voltage controllers convert

fixed ac to fixed dc

variable ac to fixed ac

variable ac to variable dc

fixed ac to variable ac

Correct!

Wrong!

-

Continue >>

In the below given voltage controller circuit

the positive half cycle at the load is same as the supply Vs

the negative half cycle at the load is same as the supply Vs

none of the mentioned

the positive and negative half cycles at the load are identical to the supply

Correct!

Wrong!

-

Continue >>

The below given controller circuit is a

full wave controller

will depend upon the firing angle

half wave controller

none of the mentioned

Correct!

Wrong!

-

Continue >>

In the principle of phase control

control cannot be achieved

control is achieved by adjusting the firing angle of the devices

control is achieved by adjusting the number of on off cycles

the load is on for some cycles and off for some cycles

Correct!

Wrong!

-

Continue >>

The AC voltage controllers are used in __________ applications.

power generation

electric heating

conveyor belt motion

power transmission

Correct!

Wrong!

-

Continue >>

A single-phase half wave voltage controller consists of

one SCR is parallel with one diode

two SCRs in anti parallel

one SCR is anti parallel with one diode

two SCRs in parallel

Correct!

Wrong!

-

Continue >>

In the below given voltage controller circuit

only the negative cycle can be controlled

only the positive cycle can be controlled

both the cycles can be controlled

none of the mentioned

Correct!

Wrong!

-

Continue >>

The below shown controller circuit is a

will depend upon the firing angle

full wave controller

none of the mentioned

half wave controller

Correct!

Wrong!

-

Continue >>

Share the quiz to show your results !

Facebook

Facebook

---

Just tell us who you are to view your results !

Show my results >>

AC Voltage Controllers-1 I got %%score%% of %%total%% right

Share your results

---

Facebook

Facebook

Twitter

Google+

---

↺   PLAY AGAIN !

Similar Articles:

• Power Electronics Objective Questions
• Top 100 PLC Objective Questions and Answers
• Top Electrical Engineering Questions & Answers
• MCQ on Measurement and Instrumentation
• PLC Programming Questions & Answers – 1
• 100 PLC Quiz Questions : True or False
• PLC Multiple Choice Questions
• Solenoid Valves Questions & Answers – 5
• Programmable Logic Controller Practice Tests
• Solenoid Valves Questions & Answers – 4