Related Questions

Some wire- wound resistors have bifilar winding. This type of winding is used to
A Increase the thermal stability
B Reduce the tolerance
C Reduce the inductance of winding
D Double the power rating of the resistor
________ cooling is the process of dissipating the armature and field winding losses to a cooling medium circulating within the winding insulation wall
A Direct
B Indirect
C Conventional
D Any of the above
Lap winding is composed of
A Any even number of conductors
B Any odd number of conductors
C That even number which is exact multiple of poles + 2
D That even number which is exact multiple of poles
In a class composed of x girls and y boys what part of the class is composed of girls ?
A y / ( x + y )
B x / xy
C x / ( x + y)
D y / xy
In a class composed of x girls and y boys what part of the class is composed of girls.
A y / (x +y)
B x / xy
C x / ( x +y)
D y/ xy
দুটি এক-পরমাণুক আদর্শ গ্যাস পরস্পরের সাথে তাপীয় সাম্যাবস্থায় আছে। A গ্যাস m ভরের অণু দ্বারা গঠিত, এবং B গ্যাস 4m ভরের অণু দ্বারা গঠিত। A গ্যাসের আয়তন ৪ গ্যাসের আয়তনের দ্বিগুণ। এদের চাপের অনুপাত PA / PB কত? (Two monoatomic ideal gases are in thermal equilibrium with each other. Gas A is composed of molecules with mass m while gas B is composed of molecules with mass 4m. The volume of gas A is twice that of gas B. What it the ratio of their pressures PA / PB ?)
A 1/4
B 1/2
C 1
D 2
If ‘Hs’ is the significant wave height, then the average wave height and highest wave height respectively are given by
A 0.6 Hs and 1.67 Hs
B 0.6 Hs and 1.87 Hs
C 1.27 Hs and 1.87 Hs
D 1.27 Hs and 1.67 Hs
When a wave is incident from the more dense into a less dense medium at an angle equal to or exceeding the critical angle, the wave suffers total internal __________ .
A Reflection
B Refraction
C Transmission
D None of the above
The wave in wave guide has
A Group velocity inversely proportional to wavelength
B Larger frequency than in the free space
C Diminishing wavelength than in the free space
D Larger wavelength than in the free space
"An Electromagnetic wave falls on to a boundary between two losses less homogeneous media with different refractive indices, a part of the wave is reflected back to the incident medium and the rest is transmitted on to the second media". This phenomenon is known as:
A Fresnel reflection
B Fresnel refraction
C Snell's law
D None of these

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