Related Questions

A company paid tk.500000 in merit raises to employees whose performances were rated A, B, or C. Each employee rated A received twice the amount of the rated C.each employee rated B received 150% of the amount of the raise thst was paid to each employee rated C. if 50 workers were rated A,100rated B and 150 were rated C, how much was the raise paid to each employee rated B?
A Tk. 740
B Tk. 1250
C Tk. 1875
D Tk. 2500
If a transformer is switched on to a voltage more than the rated voltage
A its power factor will deteriorate
B its power factor will increase
C its power factor will remain unaffected
D its power factor will be zero
When a given transformer is run at its rated voltage but reduced frequency, its
A flux density remains unaffected
B iron losses are reduced
C core flux density is reduced
D core flux density is increased
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
Power amplifiers generally use transformer coupling because transformer per-mits
A Cooling of the circuit
B Impedance matching
C Distortionless output
D Good frequency response
A survey was conducted among the students of Khulna University to find out how many forms of physical exercise usually swam, 25% said they usually did jogging, 20% said they played cricket, 15% said they usually played football and 20 respondents said they did not take any form of exercise. From the above findings it can be concluded that.
A The student of khulna University do not usually take physical exercise.
B No respondent took more than one form of exercise.
C The method of data collection was not valid.
D Some of the respondents took more than one form of exercise.
Capacitors for power factor correction are rated in
A kW
B kVA
C kV
D kVAR
Power plant having maximum demand more than the installed rated capacity will have utilisation factor
A equal to unity
B less than unity
C more than unity
D none 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
The changes in volume of transformer cooling oil due to variation of atmospheric tem-perature during day and night is taken care of by which part of transformer
A Conservator
B Breather
C Bushings
D Buchholz relay

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