Sentences. 2 The input is typically from the battery;

1 Inverters are used

2 The input is typically from the battery;

3 Older rotary invertertechnology uses

5 A typical rotary inverter has

6 The outputs can be single- or three phase;

7 The desired output frequency of 400 Hz is determined

8 The desired output frequency of a rotary inverter is determined by

9 Modern aircraft equipment is based

10 The DC power supply is connected to

11This output is stepped up to

12 The static inverter can either be used as the sole source of AC power

13 The DC input voltage is applied to

14 This output is connected to

15 Frequency and voltage controls are usually integrated

B

a on the static inverter; it is solid state, i.e. it has no moving.

b the DC input voltage.

c by the DC input voltage.

d 26 V AC, or 115 V AC.

e a four-pole compound DC motor driving a star-wound AC generator.

f a DC motor to drive an AC generator.

g the output can be a low voltage (26 V AC) for use in instruments, or high voltage

(115 V AC single or three phase) for driving loads such as pumps.

h to convert direct current into alternating current.

i the desired AC output voltage via a transformer.

j an oscillator; this produces a low-voltage 400 Hz output.

k or to supply specific equipment in the event that the main generator has failed.

l an oscillator that produces a sinusoidal output voltage.

m a transformer that provides the required output voltage.

n within the static inverter; it therefore has no external means of adjustment.