Hyundai Motors located In Chennai

Hyundai Motors in chennai - bangalore national highways near sripermpudur at irungattukottai it located which is 40 kms away from chennai central

Electronic Projects for Light Operated Switch (With LDR) Using OP - Amp (741)

A light operated swiitch can be made with the Op-Amp IC 741. LDR is used  here as the light sensitive device and Op - Amp is used in its inverting mode. we can add any thpe of load in series with the relay.

Circuit For Light Operated Switch (With LDR) Using OP - Amp (741)



Part List
IC 741
Transistor : SL 100 OR BC 1488
Diode : OA 79, Reply 400 E,9V
Resistance : 1k,10K 2no,VR 470k, 2.2k, 330 Ohm's,
LDR : 1 No
DPDT Switch
Capacitor : 1MF/30V

Write an letter to the Principal of your school for leave owing to illness

Write an letter to the Principal of your school for leave owing to illness

To
The Principal
East West School
Chennai 

Sir,
Respectfully I beg to state that I have been suffering from Pneumonia since last night.
It may take a week's time for complete recovery. The Doctor has advised me to take rest.
It is requested that a week's leave may kindly be granded to me. A medical certificate in this
regard will be submitted in due course.

Thanking you,
Yours obediently,
xxx

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Abbreviations are often used in letters. Why?

Abbreviations are often used in letters. They are short forms of words or phrases. By using abbreviations we can reduce space and save time. Such abbreviations are common in business and official/technical letters. 

Some of them are listed Below:

Abbrev. before Names:

Chi.   - Chiranjeevi
Kum. - Kumari
Mr. - Mister
Mrs. - Mistress
Messrs. - Messieurs
Dr. - Doctor
Er. - Engineer
Prof. - Professor
Smt. - Srimati
Sri - Sriyuth


Days:

Sun. - Sunday
Mon. - Monday
Tue. - Tuesday
wed. - Wednesday
Thurs.- Thursday
Fri. - Friday
Sat. - Saturday


Months:

Jan. - January
feb. - february
Mar. - Marth
Apr. - April
Aug. - August
Sept.- September
Oct. - October
Nov. - November
Dec. - December

Other Abbreviations:

amp. - Ampere
a/c - account
Cal. - Calories
C.C - Cubic centimetre
Cm. - Centimetre
F.O.R - Free on rail
ft. - Foot/Feet
gm. - Gram
h.p - Horse Power
hr. - Hour
Hz. - Hertz
In - Inch
Kg - Kilogram
Km - Kilometre
KW - Kilowatt
Lb - Pound
min. - Minute

Remember These Phrases While You Write A Letters

Main Things to be Follow :

 1. To Begin Letters:

•  Heartiest congratulations on....
•  My heartiest thanks for....
•  I am very glad to receive your letter of may 25...
•  It is a long time since i heard from you ...
•  This is just to inform you...
•  I was quite shocked....
•  May I request you....
•  I am grieved to learn...
•  I wish to thank you....

 2. To Begin Business Letters:

• I herewith submit my application....
• As you are aware...
• I shall be glad if you kindly let me know....
• I am compelled to inform you...
• I shall be obliged if you...
• I regret to inform you that....
• In regart to your letter dated....

 3. To Begin Applications:

• Having read in the indian express of..
• In response to your advertisement...
• with reference to your advertisement...
• Having learnt that there is a vacancy....
• An executive has told me that you need.....
• With profound respect I beg to submit....

 4. Closing Phrases:

• With warm regards....
• With kind regards...
• Awaiting your favourable reply....
• With love and best wishes....
• With love to Children...
• Hoping for an early reply.....
• With all best wishes
• With due apologies..
• Love to all our friends
• Thanks for an early response.

 

How to Write letters in personal, private, social, business & official Letters and the Components of Letters

Letters of couse, are written for a number of purposes. Mainly, letters can be classified as under,

1. Personal, private or social letters
2. Business letters
3. Official letters
   

1. Personal, private or social letters

Usually,such letters are written to friends and relatives. they are friendly letters and as such, are written in an informal, conversational and simple in style.

2. Business letters

Business letters include the latters written by persons dealing in business and by few others who order for goods. They are written to manufacturers, banks industries, shopkeepers and companies etc.

3. Official letters

As the title indicates, such letters are written to or by government officials they are not personal letters. These letters include letters writtens to news paper editors, company managers, industries, school head masters, all india ratio, post office etc.