Tuesday, September 8, 2015

Mobile Hardware and Servicing - Unit I - Part A

 PART – A (2 Marks)
(Minimum of 20 Questions in each Unit of type MCQ, True or False or open question type, no maximum limit)

Unit – I
1.      -----------------is  the inventor of the first portable handset.
a) Alexander Graham Bell      b) Thomas Alva Edison          c) Dr.  Martin Cooper             d) None
Answer: c) Dr.  Martin Cooper

2.      Expansion of GSM
a)      Global System for Mobile Communications        
b)      Global Standard for Mobile Communications
c)      General  System for Mobile Communications
d)     None
Answer: a) Global System for Mobile Communications

3.      CDMA stands for
a) Code Direct Multiple Access          b) Central Division Multiple Access
c) Code Division Multiple Access      d) None of these
Answer: c) Code Division Multiple Access

4.      GPRS stands for
a)      General packet radio system         b) General packet radio service
c)      General packet radio station         d) None
Answer: b) General packet radio service

5.      1G support only the _____________ Technology
a)      Digital       b) Analog        c) Both a)&b)  d)None
Answer: b) Analog

6.      Current measured in __________
a)      ampere  b) Volt     c) ohm             d) None of these
Answer: ampere 

7.      Voltage measured in____________
a)ampere  b) Volt        c) ohm             d) None of these
Answer: b) Volt

8.      Resistance  measured in____________
a)ampere  b) Volt        c) ohm             d) Mhz
Answer: c) ohm

9.      _________ is a passive two-terminal electrical component used to store energy electro statically in an electric field
a)Diode           b) Resister                  c) Capacitor   d) Transformer
Answer: c) Capacitor

10. ____________resists the flow of current in an electronic circuit
a)Diode           b) Resister                  c) Capacitor   d) Transformer
Answer: b) Resister

11.  _______is an electronic device that can allow the electric current to flow in one direction only
a)Diode           b) Resister                  c) Capacitor   d) Transformer
Answer: b) Resister

12.  Which components convert the sound waves to digital signal_________
a) Speaker       b) Microphone             c) vibrating motor       d) none
Answer:  Microphone
           
13.  Which components convert the digital signal to sound waves------------
Answer: a) Speaker

14.  ____________ is the important component of microphone
a) Silicon         b) diaphragm   c) resister         d) none
Answer: b) diaphragm

15.  LED stands for__________
a) Light Emitting Diode         b) Light Emitting Digital
c) Light Electrical Diode        d) none
Answer: a) Light Emitting Diode

16.  TFT stands for___________
a) Thin Film Transistor   b) Thin Film Transformer     c) Thick Film Transistor          d) None
Answer: a) Thin Film Transistor  

17.  ___________ is a safety device that lies in series in a circuit between an electrical source and its associated load.
a) diode           b) capacitor     d) fuse             d) resister
Answer: d) fuse        

18.  quartz crystal used to
a) Keep time                b) charging      c)filtering        d) None
Answer: a) Keep time          

19.  Capacitor unit measured by
a) Ampere       b) Volt             c) Farad           d) none
Answer: c) Farad     

20.  _________ is an instrument used to check for AC or DC voltages
a) Multimeter              a) Speaker       b) Microphone             c) vibrating motor

Answer: a) Multimeter