AJKPSc LATEST JOBS

AJKPSc LATEST JOBS

latest health job in azadkashmir

latest health job in azadkashmir

Govt of punjab primary and secondry Health care jobs

Govt of punjab primary and secondry Health care departments jobs

Diphtheriais the disease mostly in children. Communities are requested to get their children vaccina

fpsc job of documentation officer

fpsc job of documentation officer

Case No/Job Title:	F4-16/2017-R [CHIEF DOCUMENTATION OFFICER]
Ministry/Department:	FEDERAL EDUCATION AND PROFESSIONAL TRAINING/ACADEMY OF EDUCATIONAL PLANNING AND MANAGEMENT
Grade:	BS-19
Special Pay:
Job Duties:	i. Acquisition of books. ii. Cataloguing and classification of books. iii. Information retrieval and Dissemination. iv. Delivery of literature, computerization of library and documentation information, providing reference and referral service.
Job status:	Permanent
Eligibility:	Both male and female candidates are eligible
Any relaxation in Maximum age limits	plus five (5) years general relaxation in upper age limit.
Min Age:	32
Max Age:	40
Qualification/Experience required:	Ph.D in the Library Science with eight (8) years post qualification experience in the relevant field. OR M.Phil in Library Science with ten (10) years post qualification experience in the relevant field. OR Second Class or Grade ‘C’ Master’s Degree in Library Science with twelve (12) years post qualification experience in the relevant field.
Domicile:	SINDH(R)=1,
Closing Date:	20-FEB-17

lecturer post in ajk ministry of education

education department jobs in muzaffarabad azadkashmir

Nuclear physics solved mcqs for ajkpsc,fpsc,Nts

solved mcqs of nuclear physics for ajkpsc,fpsc,Nts and all other ompetitve exam

• 
  
• 1) Each alpha particle has four time the mass of.........hydrogen nuclus
• 2) The charge on alpha particle is................................+2e
• 3) the charge on beta particle is.................................... -e
• 4) Ionization produced by beta particle shows..............zigzag path
• 5) gamma rays consist of..............................................radiation similar to x-rays
• 6) Geiger counter is a device to detect......................... radiation
• 7) geiger counter cannot be used for............................. fast counting
• 8) a cloud chamber uses................................................. super saturated vapour
• 9) Geiger counter can be used for................................... slow counting
• 10) a solid state detector mainly consist of a .................. silicon diode
• 11) skin cancer is cured by ............................................... beta particle
• 12)  The half life of organ is ............................................. 1.3 billion years
• 13)  The binding energy of helium is ................................. 28.2 Mev
• 14) First atomic reactor was designed by ............................ Fermi
• 15) Atom bomb depend upon the process of ....................... Fusion
• 16) Energy emitted from sun is due to ................................. Fusion process
• 17) Gamma rays are similar to .............................................. X-rays

Solar Energy Conversion Techniques//http://khawaja92.blogspot.com

Solar Energy Conversion Techniques
Photovoltaic
Overview of world energy, Options for harnessing solar energy  and their respective current and projected costs/potential, compared to traditional sources. Fundamentals of photoelectric conversion: charge excitation, conduction, separation, and collection. Commercial and emerging photovoltaic (PV) technologies. Cross-cutting themes in PV: conversion efficiencies, loss mechanisms, characterization, manufacturing, systems, reliability, life-cycle analysis, risk analysis. Photovoltaic technology evolution in the context of markets, policies, society, and environment.

Charge excitation and conduction
How light is converted to electricity. Direct and indirect semiconductor bandgaps. Optical properties of semiconductors. Introduction to intrinsic, doped semiconductors, conjugated polymers. Minority carrier mobility, lifetime, diffusion length. Charge excitation in non-semiconducting materials. Conduction, dispersive hopping. 

Charge separation
How voltage, current are formed. Minority-carrier devices: semiconductor pn-junctions. IV curves. Majority-carrier devices (organics). Quantum-size effects of charge separation.

Charge collection, and the solar cell device
Metallization. Solar cell device architectures. Common limitations of efficiency, short-circuit current, fill factor, open-circuit voltage.

Commercial technologies-I
Crystalline silicon solar cells, Crystal growth: ingot silicon, ribbon and sheet silicon. Wafering. Cell fabrication: methods, architectures, concepts. History, state-of-the-art. Emerging trends, cutting-edge technology. Role of innovation. 

Commercial technologies-II
Thin Films: thin film silicon (incl. amorphous, SiGe, micromorph, tandem cells), cadmium telluride, copper indium gallium diselenide. Precursors. Deposition processes and technologies. Other technologies: concentrator devices and materials, heterojunction devices, photovoltaic thermal.

emperature at surface the sun is about 6000K. 

Power density 5.961 × 107 W.m−2 at its surface the sun

Power density 1353 W.m−2 in Earth orbit, at distance of 150 × 106km 

Power density 1000 W.m−2 at the Earth’s surface. 

The exact figure for the solar power density depends on 

latitude, 

season, 

climatic conditions

and albedo of the surroundings.