The main reason for generation of harmonics in a transformer could be

Generation X refers to people born roughly between 1965 and 1981 Employees of Generation X tend to be successful when they can carry out task independndy. This makes Generation X the most entrepreneurial generation in history. Which of the following statements is best supported by the paragraph?

A

Employees of Generation X like to challenge the work attitudes of their bosses.

B

Employees of Generation X tend to work in jobs that require risk-taking behavior.

C

Employees of Generation X have a tendency to be self directed workers

D

Employees of Generation X work harder than people form other generations

Which of the following is the most likely source of harmonics in a transformer?

A

Poor insulation

B

Overload

C

Loose connections

D

Core saturation

Harmonics in transformer result in

A

Increased core losses

B

Increased I²R losses

C

Magnetic interference with communication circuits

D

All of the above

Which of the following is the main advantage of an auto-transformer over a two-winding transformer?

A

Eddy losses are totally eliminated

B

Copper losses are negligible

C

Saving in winding material

D

Hysteresis losses are reduced

Which of the following is the main advantage of an auto-transformer over a two winding transformer?

A

Hysteresis losses are reduced

B

Saving in winding material

C

Copper losses are negligible

D

Eddy losses are totally eliminated

Vibration of which among the following produces only odd harmonics?

A

A vibrating rod fixed at two ends

B

A vibrating string fixed at two ends

C

An air column in a closed organ pipe

D

An air column in an open organ pipe

In order to have constant chain reaction to produce a constant rate of heat output, the value of ratio of the number of neutrons in one generation to the number of neutrons in the immediately preceding generation must be

A

Greater than 1.0

B

Less than 1.0

C

Equal to zero

D

Equal to 1.0

Which cell division of phase of cell division maintains the chromosomes number constant from generation to generation?

A

Mitosis

B

Meiosis

C

Prophase I

D

Zygotene

In which of the following countries, is the ratio of hydroelectric generation to the total electricity generation the highest?

A

Norway

B

Sweden

C

Italy

D

Denmark

The output transformer used in a power amplifier is a ___________ transformer

A

1:1 ratio

B

Step-up

C

Step-down

D

None of the above

The main reason for generation of harmonics in a transformer could be

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