An ideal transformer steps down 120 V to 12 V and the 2630-turn secondary supplies 12 A of current through a load of 1 ohm. (a) Determine both the rms average current and the peak current in the primary. (b) What is the number of turns in the primary? (c) What is the ratio of power in the secondary to the power in the primary?

Consider a large isothermal enclosure that is maintained at a uniform temperature of 2000 k. calculate the emissive power of the radiation that emerges from a small aperture on the enclosure surface. what is the wavelength ? , below which 10% of the emission is concentrated? what is the wavelength ? 2 above which 10% of the emission is concentrated? determine the wavelength at which maximum spectral emissive power occurs. what is the irradiation incident on a small object placed inside the enclosure?

Select any two (2) areas of applications of chain-drive. (clo4) a)-permanent lubrication necessary b)-hydraulic forklift truck operation c)-rigging and heavy moving materials d)-relatively high maintenance costs e)-costlier than belt drives

Inspection for bearing condition will include: (clo4) a)-color b)-smell c)-size d)-none of the above