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Karan Singh
Karan Singh
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study24x7Karan Singh

Karan Singh

Studied electrical diploma at gurukul
electrical engineering at Ginger webs
Live in Kota,India, Rajasthan
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Karan Singh
03 Oct 2023 01:30 PM study24x7 study24x7

 In stepped wave inverters, one of the inverters are gated such as to obtain

A

one level modulation

B

 two level modulation

C

zero level modulation

D

none of the mentioned

IIT-JEE Sciences
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Karan Singh
03 Oct 2023 01:29 PM study24x7 study24x7

 In case of stepped wave inverters,

A

 both the transformers have 1:1 turns ratio

B

both the transformers have 1:2 turns ratio

C

both the transformers have different transformer ratio

D

none of the mentioned

IIT-JEE Sciences
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Karan Singh
03 Oct 2023 01:29 PM study24x7 study24x7

Pulses of different widths and heights are superimposed in case of _______ harmonic reduction technique.

A

transformer connection

B

pulse width modulation

C

stepped-wave inverter

D

none of the mentioned

IIT-JEE Sciences
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Karan Singh
03 Oct 2023 01:28 PM study24x7 study24x7

The output voltage obtained by connecting two inverters through a transformer is a

A

square wave

B

 sine wave

C

quasi-square wave

D

 none of the mentioned

IIT-JEE Sciences
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Karan Singh
03 Oct 2023 01:27 PM study24x7 study24x7

For harmonic reduction by transformer connection, the output voltages from the two inverters must be

A

similar and in-phase with each other

B

dissimilar but in-phase with each other

C

similar but phase shifted from each other

D

dissimilar and phase shifted from each other

IIT-JEE Sciences
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Karan Singh
29 Sep 2023 11:34 AM study24x7 study24x7

Which of the following is used as a harmonic reduction technique in inverters?

A

Amplitude modulation

B

 Cycloconverter control

C

Transformer connection

D

Series connection of two inverters

IIT-JEE Sciences
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Karan Singh
29 Sep 2023 11:29 AM study24x7 study24x7

A single-phase bridge inverter, fed from a 230 V dc is connected to the load R = 10 Ω and L = 0.03 H. The output is a quasi-square wave with an on period of 0.5 of a cycle. Determine the fundamental component of rms output voltage.

A

207.10 V

B

146.42 V

C

265.4 V

D

129 V

IIT-JEE Sciences
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Karan Singh
29 Sep 2023 11:29 AM study24x7 study24x7

 A single-phase bridge inverter, fed from a 230 V dc is connected to the load R = 10 Ω and L = 0.03 H. Determine the fundamental component of rms output current. Fundamental output frequency of the square wave output = 50 Hz.

A

30 A

B

15 A

C

2.3 A

D

20.7 A

IIT-JEE Sciences
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Karan Singh
29 Sep 2023 11:28 AM study24x7 study24x7

Output voltage of a single-phase bridge inverter, fed from a fixed dc source is varied by

A

varying the switching frequency

B

pulse-width modulation

C

 pulse amplitude modulation

D

all of the mentioned

IIT-JEE Sciences
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Karan Singh
29 Sep 2023 11:28 AM study24x7 study24x7

Control of frequency and control of voltage in 3-phase inverters is

A

possible only through inverter control circuit

B

possible through the control circuit of inverter and converter

C

possible through inverter control of frequency and through converter control for voltage

D

none of the mentioned

IIT-JEE Sciences
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