Related Questions

Dielectric strength of medium
A increases with rise in temperature
B increases with moisture content
C is same for all insulating materials
D none of the above
Which medium has the least dielectric strength ?
A Paraffin wax
B Quartz
C Glass
D Air
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.
Compressive strength of wood is usually more along the grains. The tenile strength of wood as compared to that of steel is about
A Half
B One third
C One fifth
D One twelfth
In what ratio must a mixture of 11% sugar strength be mixed with that of 25% sugar strength so as to get a new mixture of 13% sugar strength?
A 5:1
B 6:1
C 7:2
D 10:3
Dielectric strength of rubber is around
A 5 kV/mm
B 15 kV/mm
C 30 kV/mm
D 200 kV/mm
The dielectric strength of transformer oil is expected to be
A lkV
B 33 kV
C 100 kV
D 330 kV
Dielectric strength of a material depends on
A moisture content
B temperature
C thickness
D all of the above
Dielectric strength of mica is
A 10 to 20 kV/mm
B 30 to 50 kV/mm
C 50 to 200 kV/mm
D 300 to 500 kV/mm
When a dielectric is placed in an electric field the field strength
A decreases
B increases
C reduces to zero
D remain unchanged

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