ارجوكم ساعدوني

فني متدرب

عضو جديد
إنضم
17 أكتوبر 2012
المشاركات
5
مجموع الإعجابات
0
النقاط
0
1.
4-Steps down the AC mains voltage.
Answer​
A.aluminium heatsink
B.Transformer
C.stabilizing circuit
D.smoothing circuit



1.
1-Keeps the diodes from overheating.
Answer​
A.Rectifier
B.aluminium heatsink
C.Transformer
D.Fuse



1.
5-Shows when the charger is on.
Answer​
A.rectifier
B.double-pole switch
C.transformer
D.neon lamp



1.
7-A burglar tries to force the alarm open.
Answer​
A.two thin metal plates come in contact
B.the foil breaks too
C.tamper sensors trigger the alarm
D.the alarm stops after a set time


1.
8-Any metal detector can discriminate between gold and other metals.
Answer​
A.True
B.False
C.sometimes
D.often



1.
9-Large objects are easier to find than small objects.
Answer​
A.often
B.False
C.sometimes
D.True



1.
3-Switches the charger on and off.
Answer​
A.rectifier
B.double-pole switch
C.transformer
D.stabilizing circuit



1.
10-All metal detectors are fitted with a flashing light to show when an object has been found.
Answer​
A.sometimes
B.False
C.often
D.True


1.
11-Generates electrical pulses.
Answer​
A.LED
B.audio oscillator
C.buffer amplifier
D.diode



1.
13-Converts the AC voltage to DC voltage.
Answer​
A.rectifier
B.transformer
C.double-pole switch
D.neon lamp


1.
2-Protects the transformer.
Answer​
A.fuse
B.neon lamp
C.smoothing circuit
D.double-pole switch


1.
14-A magnet on the door trips a switch on the frame.
Answer​
A.someone steps on them
B.a door is opened
C.a window is opened
D.the glass is broken


1.
12-Amplifies pulses to drive the LED.
Answer​
A.audio oscillator
B.diode
C.LED
D.buffer amplifier


Question 14
1.
6-Converts pulses into pulsed radiation.
Answer​
A.diode
B.LED
C.buffer amplifier
D.audio oscillator

 

مواضيع مماثلة

ماجد عباس محمد

عضو معروف
إنضم
3 سبتمبر 2006
المشاركات
5,325
مجموع الإعجابات
197
النقاط
63
اخى
ضع محاولاتك ونحن نناقشها هنا
الأسئلة من المنطق يمكن الإجابة عليها
 

فني متدرب

عضو جديد
إنضم
17 أكتوبر 2012
المشاركات
5
مجموع الإعجابات
0
النقاط
0
صادق والله بس انا ما عرفتها ممكن تحلها الله يجزاك خير
 
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