**1. **The Distribution Factor is also known as

- Power Factor
- Breath Factor
- Belt Factor
- Both 2 and 3

**2.** Distribution factor is defined as the ratio of

- Actual voltage to Possible voltage
- Possible Voltage to Actual Voltage
- Actual Power to Possible Power
- Possible Power to Actual Power

**3. **Calculate the distribution factor for a single layer 18 slots 2-pole three-phase stator winding

- $3 \times \frac{{sin30^\circ }}{{sin10^\circ }}$
- $3 \times \frac{{sin10^\circ }}{{sin30^\circ }}$
- $ \frac{{sin10^\circ }}{{3\;sin30^\circ }}$
- $ \frac{{sin30^\circ }}{{3\;sin10^\circ }}$

**5.** The armature of a single phase alternator is completely wound with T single turn coils distributed uniformly. The induced voltage in each turn is 2V (RMS). The emf of the whole winding is

- 2 T volts
- 1.414 T volts
- 1.314 T volts
- 1.273T volts

**6. **The breadth factor for 3^{rd} harmonic emf of a 3-phase, 4-pole, synchronous machine having 36 stator slots is

- 0.47
- 0.53
- 0.67
- 0.73

**7.** In alternators, the distribution factor for the given number of phases is dependent only on the

- Number of turns per coil
- Supply voltage
- Number of distributed slots under a given pole
- Type of the windings

**8.** A 3-phase alternator is wound with 60° phase-spread armature windings and develops 300kVA. If the armature is reconnected utilizing all the coils for single-phase operation with a phase spread of 180 degrees, the new rating of the machine is

- 100 kVA
- 200 kVA
- 250 kVA
- 300 kVA

**9.** Armature of a three phase alternator has 240 slots. Armature has 8 poles. Its distribution factor is _________.

- $\frac{\sin 3°}{10\sin 30°}$
- $\frac{\sin 30°}{10\sin 3°}$
- $\frac{\sin 15°}{\sin 3°}$
- $\frac{\sin 15°}{10\sin 3°}$

**10.** The breadth factor for 3rd harmonic emf of a 3-phase, 4-pole, synchronous machine having 36 stator slots is

- 0.47
- 0.53
- 0.67
- 0.73

**11.** A 6-pole alternator with 36 slots carrier two-phase distributed winding. Each coil is short pitched by one slot. The winding factor is given by

- $\frac{1}{{3\sqrt2}}\cot \left( {{{15}^0}} \right)$
- $\frac{1}{{4}}\cot \left( {{{15}^0}} \right)$
- $\frac{1}{{2\sqrt2}}\cot \left( {{{15}^0}} \right)$
- $\frac{1}{{6}}\cot \left( {{{15}^0}} \right)$

**12.** A winding with only one slot per pole per phase is called _______

- Concentrated winding
- Distributed winding
- Both 1 and 2
- None of the above

**13. **A winding with several slots in space is called

- Concentrated winding
- Distributed winding
- Both 1 and 2
- None of the above

**14.** The distribution factor kd is defined as the

- Concentrated winding EMF/ Distributed winding EMF
- Concentrated winding EMF = Distributed winding EMF
- Distributed winding EMF/Concentrated winding EMF
- None of the above