EEITG31D Oral Quiz 3

How many parallel paths are there in the triplex lap-wound armature of a 4-pole DC generator?

What refers to the stress in the material at the elastic limit?

• working stress

• yield stress

• ultimate stress

• maximum stress

A 4-pole DC generator has 400 conductors in its simplex wave wound armature. With a flux of 0.02 Wb per pole, the voltage generated by the armature is 213.33 V. Find the generator speed in rpm.

• 750

• 800

• 850

• 900

If two events have no outcome in common,

then they are said to be mutually inclusive.

• TRUE

• FALSE

Calculate the mean of 67, 53, 50, 76, 66, 81, 69, 77, and 91.

A generator delivers a load through a pair of wires, each of which has a resistance of 0.06 ohm. If the load voltage and power are 120 V and 4.8 kW respectively, what is the power loss in the line wires in watts?

What is the minimum diameter of the bar subjected to an axial load of 7.2 kN if its ultimate stress is 125 MPa?

• 2.43 mm

• 4.24 mm

• 6.34 mm

• 7.69 mm

• 8.56 mm

It is a measure of dispersion that depends on the deviation of all scores from the mean.

Which of the following is a unit of modulus of elasticity?

• N-m

• Pa

• N-m/s

• none of the choices

Which of the following events are mutually exclusive?

• events “ace or black card”

• events “queen or face card”

• events “diamond or black Jack”

• events “king or red card”