Engineering Answers

a 6.6kv, y-connected, 3phase alternator has a synchronous reactance of 6 per phase and a negligible resistance. at a certain field current the armature is known to induce 5.8kv per phase. calculate the max power that can be developed by the alternator at this excitation

Neet diagram discuss the organisation and importance of a cash memory define the following terms related to the cash memory organisation

Hit ratio

locality of reference

Mapping

Write through the write back policies

With the help of a neat diagram discuss the organisation and importance of a cash memory define the following terms related to the cash memory organisation local of reference mapping right to the right back policies

Show that the slow-down ∆v of the Earth due to the asteroid collisions is given by: ∆v = v  1 − 1 1 + πR2dρ m M

Assume that a gravitational anomaly in the solar system has shied afield of asteroids into Earth’s orbit, and the field is now moving directly towards Earth. The asteroid field has a density of ρ (asteroids/volume), and each asteroid has an average mass of m. The asteroid field stretches over a distance d in Earth’s path. Assume that the Earth moves with a velocity of v, the asteroids with u, and that v  u. Let R be the radius and M the mass of the Earth. The Earth collides with the asteroid field:

he specific gravity of ethyl alcohol is 0.79. Calculate specific volume

Enumerate at least 5 special types of diode. Cite/give the following for each diode:

1. Schematic symbol
2. Construction
3. Characteristic Curve
4. Basic operation (including mathematical equation if there's any)
5. Applications

A welded joint, as shown in Fig. is subjected to an eccentric load of 2500 N.

Find the size of the weld, if the maximum shear stress in the weld is not to exceed

50 N/mm 2

Determine the crippling load for a T-section of dimensions 10 cm. x 10 cm x 2 cm and of length 5 m when it is used as strut with both of its ends hinged. Take Young's modulus, E2.0x10^5 N/mm^2