The heated parts of an electrical machine dissipate heat into their surroundings by which of the followingmodes of heat dissipation ?
A). Conduction
B). Convection
C). Radiation
D). All of the above
1. For the same draught produced the power of induced draught fan as compared to forced draught fan is
2. Pressure transducer for measuring blood pressure is
3. The capacity of capacitor bank used in power factor correction is expressed in terms of
4. Paramagnetic materials have relative permeability
5. Which type of winding is used in 3phase shell-type transformer?
7. For a purely inductive circuit which of the following is true?
9. The crystal oscillator frequency is very stable due to ___________ of the crystal