Page 77.Exercise 7.

1-This plastic can resist heat and cannot be bent.
2-Across brace can withstand to tension in two direction.
3.these sunglasses cannot be scratched,but can be broken.
4-The emergency generator can be moved by forklift but cannot be  carried.

MARKS IN 1ST SAMESTER.

My wonderfull summer    6.5

Phrases                           10

Maintance schdule           10

Sensor                             10

Mathematical                    10

Phone conversation          i dont know.

P-78 Language                7
Units and standards          6.5.

PHARESES

GPS- Global positing system.
TDC-Top dead center.
DOHS-.Double over head camshaft
OHC-Over head camshaft.
API-American petroluem ingenring.

P-78 LANGUAGE

Expressing cause:because,since,as
necessary result(or effect):(and)so,(and)therefore,(and)as a result.

1-Ben got a shocked because he touched an earth live wire(as a result)
Ben touched an earthed live wire,and as a result he got a shock.
2-Ron touched an earthed neutral wire,and as a result he was safe.(because).
Ron was safe,because he touched an earthed neutral wire.
3-Pete touched a live wire when a tree touched it.so he was safe(since)
Pete was safe,since he touched a live wire when a tree touched it.

MAINTENANCE SCHEDULE

I       inspect
C     clean
A     adjust
L     lubricate
R    replace

RF SENSOR (RADIO FREQUENCY SENSOR)

Its made of plastic and electronic chips.This is connected to engine control unit.
The radio frequency sensor is based on the reception of electromagnetic waves.
RF-sensor in the cars are limited the channel which contain UHF electromagnetic radiation with thw exeption of the radar.
The radar(radio detection and ranging) is a system of measurement of distance and speed using radio waves.these devices have an effective range of aproximately 120m and detection angle of aproximately 4ª.
With radar can also determine the relative speed between the own vehicle and obstacle he has in the front.
We have the following example of the sensores based on RF.
-The tyre pressure sensor.
-Remote control for opening and closing doors.
-Comunication with bluetooth devices,which allow to exchanging data,music images with mobile phone,etc..

MATHEMATICAL

2/7        Two seventh or 2 over seven.
2ª3        two cube
+            plus
-            menos
/            divide
*           multiply
2ª2        squerb
2ª4      to the power four
2/7=2ª3+A2*2= 2 seventh is equal 2 cubic plus A subscript 2 times 2.

UNITS AND STANDARDS OF AUTOMOTIVE INDUSTRY

UNIT NAME	UNIT SYMBOL	QUANTITY NAME	DIMENSION SYMBOL
Meter	m	Length	L
Kilogram	kg	Mass	M
Second	s	Time	T
Ampare	A	Electric current	I
Kelin	k	Temprature	Q
Mole	mol	Amount of substance	N
Candela	cd	Luminous intensty	J
Radian	rad	Angle	m/m
Hertz	Hz	Frequency	1/s
Newton	N	Force,Weight	kgm/s2
Pascal	pa	Pressure,stress	kg/ms2
Joule	J	Energy,Work	kgm2/s2    N,m
Watt	W	power,	kgm2/s2     J/s
volt	v	Voltage	kgm2/s3,A
Tesla	T	Magnetic field	kgm2/s2A
Lumen	Lm	Luminous flux	cd
Lun	Ln	Iluminance	cd/m2

STANDRDS

SAE       sociaty of american enginering.

B.S        british standrds

UNE      spanish normas

D.I.N

 API        american petroleum institute.

MY WONDERFULL SUMMER

                                    MY WONDERFULL SUMMER
This summer i didn,t do much,but this summer was my best summer of my life.
In the first week of the july,i went to my hometown(shiekh sukha in pakistan).
I relaxed at my home and i spent all time with my family.I stayed up untill late going out
with cousins or going for a meal.
most of the days i get up at midday.Everyday in the afternoon i played bedminton with my cousins and friends.
This summer i really enjoyed it.