EASA Part 66 Module 4 (Electronic Fundamentals)

Practice Exam Module 4 Electronic Fundamentals

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1.		What gives the colour of an LED?
		a)	The plastic it is encased in
		b)	The active element
		c)	The type of gas used inside it

 

2.		A germanium diode is used for
		a)	rectification
		b)	voltage stabilization
		c)	modulation

 

3.		Why is a diode put in parallel with an LED?
		a)	To protect it from AC
		b)	So it will work only above a certain voltage
		c)	So it will work only below a certain voltage

 

4.		When testing the forward bias of a diode with a multimeter
		a)	the positive lead of the ohmeter is placed on the cathode
		b)	the positive lead of the ohmeter is placed on the anode
		c)	it does not matter which terminal the positive lead of the ohmeter is placed

 

5.		In an NPN transistor the P is the
		a)	collector
		b)	base
		c)	emitter

 

6.		The output of a tachogenerator is
		a)	proportional to speed of rotation
		b)	proportional to position
		c)	proportional to acceleration

 

7.		AC power is supplied to
		a)	torque receiver only
		b)	torque transmitter only
		c)	both the torque receiver and torque transmitter

 

8.		This is a diagram of
		a)	a TRIAC
		b)	an SCR
		c)	a Schottky diode

 

9.		How is a PCB protected after manufacture?
		a)	With non-conductive varnish
		b)	With wax
		c)	By conformal coating

 

10.		A differential synchro
		a)	can only be used as a transmitter
		b)	can only be used as a receiver
		c)	can be used as either a transmitter or a receiver