DGCA DC Electrics 7. DC Motors

Results

Q1. Rotary actuators are used for:

undercarriage retraction

centre of gravity assessment

operation of fuel cocks

movement of control surfaces

Correct answer is – operation of fuel cocks

Q2. Actuator normal travel is controlled by:

a clutch

limit microswitches

mechanical indicators

mechanical stops

Correct answer is – limit microswitches

Q3. On a twin engined DC aircraft having two DC generators load sharing is achieved by:

equalizing engine RPMs

an equalizing circuit to sense the difference and equalize the voltages of the two generators

synchronizing relays and voltage coil tuners

an equalizing circuit to sense the difference and equalize the field currents of the two generators

Correct answer is – an equalizing circuit to sense the difference and equalize the voltages of the two generators

Q4. Pilots are informed of rotary actuator positions by:

non-return valves

lights or doll's eye indicators

travel indicators

veger counters

Correct answer is – lights or doll’s eye indicators

Q5. Press-to-test lights are used:

to indicate to the pilot that the circuit has power and is complete

to control the movement of a rotary actuator

to indicate to the pilot that the circuit has operated

only to indicate to the pilot that the equipment has malfunctioned

Correct answer is – to indicate to the pilot that the circuit has power and is complete

Q6. A device for changing AC to DC is:

an inverter

a rotary transformer

a rectifier

an alternator

Correct answer is – a rectifier

Q7. An inching control is used in conjunction with:

a linear actuator

a rotary actuator

a combination of linear and rotary actuator

a rectifier

Correct answer is – a linear actuator

Q8. Friction clutches are fitted to actuators for:

protection against mechanical overload

protection against brake on loads

protection against non-return valve failure

protection against supply failures

Correct answer is – protection against mechanical overload

Submit The Test