Page 798 - Basic Electrical Engineering

c. K = 1 and K = 1
p
d
d. K = 1 and K = 0.
d
p
4. With m as the number of slots per pole per phase and a as the slot angle, the distribution
factor, K is
d

a.

b.

c.

d.

5. Which of the following statements is not true for a synchronous machine?

a. The machine can have a cylindrical rotor
b. The machine can have a salient-type rotor
c. The machine can have non-salient rotor construction
d. The machine can have a squirrel-cage-type rotor construction.

6. In a synchronous machine, armature reaction is

a. The effect of leakage flux on the main field flux
b. The effect of armature flux on the leakage flux
c. The effect of armature flux on the main field flux
d. The effect of reduction of air-gap flux due to large air gap between the field system
and the armature.

7. In synchronous machine, armature flux aids the main field flux on

a. lagging power factor load
b. leading power factor load
c. resistive load
d. resistive-inductive load.

8. When a synchronous generator is loaded, its terminal voltage may increase when the load
power factor is

a. lagging
b. leading