Module 7c : Maintenance Practices Avionics

73 Questions | By Bongzki_02 | Updated: Mar 21, 2022 | Attempts: 1638

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Module 7c : Maintenance Practices Avionics - Quiz

This is a preparation exam for EASA. This is not an actual EASA exam.

Questions and Answers

1.

In a permanent magnet moving coil, the pointer is returned to its original position by ___________.
- A.
  
  The use of a hairspring.
- B.
  
  Adding an opposing magnet.
- C.
  
  Adjusting the "zero-knob"
2.

What type of meter uses the principle of magnetic repulsion between like poles?
- A.
  
  D'Arsonval Movement
- B.
  
  Moving-vane Meter Movement
- C.
  
  Permanent Magnet Moving-Coil Movement
3.

An ammeter must never be connected ________ the power supply.
- A.
  
  In series with
- B.
  
  In parallel with
- C.
  
  Opposite the
4.

If the range of current to be measured is greater than the full scale current of the meter, a __________ must be installed in ____________ with the meter.
- A.
  
  Shunt capacitor, parallel
- B.
  
  Shunt resistor, series
- C.
  
  Shunt resistor, parallel
5.

What device works on effect of sensed DC magnetic field on a self transmitted AC magnetic field to measure current flow?
- A.
  
  Shunt meter
- B.
  
  Multimeter
- C.
  
  Current Transformer
6.

Which device is categorized by 50:5, 100:5, 300:5, etc. as ratio of the current between the conductor and the meter reading?
- A.
  
  Current transformer
- B.
  
  Ammeter
- C.
  
  D'Arsonval Meter
7.

What type of meter is used to measure the pressure being applied to the circuit?
- A.
  
  Ammeter
- B.
  
  Wattmeter
- C.
  
  Voltmeter
8.

To measure voltage in a circuit, the voltmeter should be connected in ________.
- A.
  
  Series
- B.
  
  Parallel
9.

What will happen if the voltmeter is reverse connected into an energized circuit?
- A.
  
  Nothing will happen.
- B.
  
  The meter power supply will discharge.
- C.
  
  The needle might be damaged.
10.

What device is connected to the d'Arsonval meter to allow measurement of AC current?
- A.
  
  Transformer
- B.
  
  Rectifier
- C.
  
  Inverter
11.

What is the process of "smoothing-out" the oscillation of the pointer in the d'Arsonval meter?
- A.
  
  Rectification
- B.
  
  Damping
- C.
  
  Vibration
12.

Which method is used in damping othe vibrations due to rectifiers in an d'Arsonval meter?
- A.
  
  Using an airtight chamber containing a vane
- B.
  
  The moving coil is wound around a thin aluminum bobbin
- C.
  
  By the induced magnetic field in the coil.
13.

Which device is commonly known as of an electrodynamic type?
- A.
  
  Ammeter
- B.
  
  Voltmeter
- C.
  
  Wattmeter
14.

A wattmeter is rated in ______.
- A.
  
  Watts
- B.
  
  Volts
- C.
  
  Amperes
15.

When using an ohmmeter, the needle pointer will deflect to what direction if it reads high resistance?
- A.
  
  To the right.
- B.
  
  To the left.
- C.
  
  Will not move.
16.

What is the purpose of the mirror on the scale of an analogue meter?
- A.
  
  To remove parallax error.
- B.
  
  To make it easier to read the value.
- C.
  
  To see if the pointer is moving to the right direction.
17.

Which of the following is true about an ohmmeter?
- A.
  
  Connect the ohmmeter in series to measure the resistance.
- B.
  
  Full scale deflection reads minimum resistance.
- C.
  
  Measure resistance in an energized or de-energized ciruits.
18.

An ohmmeter with sensitivity of 10,000 per volt means that
- A.
  
  1000 ohms resistance is needed to 1 milliamp of current at FSD
- B.
  
  1 ohm resistance is needed to 1 milliamp of current at FSD
- C.
  
  100 ohms resistance is needde to 1 milliamp of current at FSD
19.

What device is used to measure the resistance of the insulation while subjecting it to a high voltage?
- A.
  
  Safety Meter
- B.
  
  Digital Multimeter
- C.
  
  Megger
20.

When testing for insulation resistance, it is necessary to test at a voltage approximately
- A.
  
  1.5 times the operating voltage
- B.
  
  15 times the operating voltage
- C.
  
  0.5 times the operating voltage
21.

What device is a low reading ohmmeter and measures resistance in milliohms that tests the bonding of aircraft components and structure?
- A.
  
  Safety Ohmmeter
- B.
  
  Milliohmmeter
- C.
  
  Bonding Meter
22.

Which device are specifically designed for ultra safe resistance on explosive devices and in hazardous environments?
- A.
  
  Megaohmeter
- B.
  
  Safety Ohmmeter
- C.
  
  Analogue Meter
23.

If the arrow is toward the load, a RF Directional Wattmeter is measuring the
- A.
  
  Forward Power
- B.
  
  Reflected Power
- C.
  
  Electrical Power
24.

What device is used to measure forward and reflected power of RF radio devices?
- A.
  
  Time Domain Reflectometer
- B.
  
  RF Directional Wattmeter
- C.
  
  ATC/DME Meter
25.

What device is used to determine the digital state of an electronic circuit?
- A.
  
  Oscilloscope
- B.
  
  Time Domain Reflectometer
- C.
  
  Logic Probe