Monday, May 21, 2018

NEET 2018 Questions on Electronics

“There is only one corner of the universe that you can be certain of improving, and that’s your own self.”
Aldous Huxley
 

The following questions were included in the NEET 2018 question paper. These are of the usual type and are simple.

(1) In the circuit shown in the figure, the input voltage Vi is 20 V, VBE = 0 and VCE = 0. The values of IB, IC and β are given by
(1) IB = 20 μA, IC = 5 mA, β = 250
(2) IB = 25 μA, IC = 5 mA, β = 200
(3) IB = 40 μA, IC = 10 mA, β = 250
(4) IB = 40 μA, IC = 5 mA, β = 125

Since the emitter to base voltage of the transistor is zero, the entire input voltage 20 volt appears across the 500 kΩ base resistor. The base current is therefore given by
            IB = 20 V/500 kΩ = (20/500) mA =0.04 mA = 40 μA
Since the emitter to collector voltage is zero, the entire 20 volt supply appears across the 4 collector resistor. The collector current is therefore given by
            IC = 20 V/4 kΩ = 5 mA   
The current gain is given by
            β = IC/ IB = (5 mA)/(40 μA) = (5×10–3)/(40×10–6) = 125
So option (4) is the answer/
(2) In the combination of the following gates the output Y can be written in terms of inputs A and B as



The AND gate at the top has inputs A and B̅. Therefore its output is A B̅. The bottom AND gate has inputs A̅ and B so that its output is • B.
Since the outputs of the NAND gates are applied to the two inputs of the OR gate, the final output (from the OR gate) is A B̅ + A̅ • B as given in option (2).
 


Friday, February 09, 2018

Apply For National Eligibility cum Entrance Test (UG) – 2018 [NEET(UG)-2018]



National Eligibility cum Entrance Test (UG) – 2018 [NEET(UG)-2018] will be conducted on Sunday, the 6th May, 2018, by the Central Board of Secondary Education (CBSE). This test is conducted for admission to MBBS/BDS Courses in India in Medical/Dental Colleges run with the approval of Medical Council of India/Dental Council of India under the Union Ministry of Health and Family Welfare, Government of India, except for the institutions established through an Act of Parliament e.g. AIIMS and JIPMER Pondicherry.
Online application for NEET 2018 has already started on 8th February 2018 and will be allowed upto 9th March 2018 Friday (23.50 Hrs)
Complete details of NEET 2018 (UG) can be obtained from the website http://cbseneet.nic.in

You will find many questions (with solution) of the type useful for NEET 2018 on this site. Click on the label NEET below this post to access all useful questions discussed on this site. You will need to click on the tab ‘Older Posts’ to access all posts in this connection.

Monday, February 05, 2018

Apply for KEAM 2018



The Commissioner for Entrance Examinations (Govt. of Kerala) has invited applications for the Entrance Examinations for admission to Professional Degree Courses in the State for the year 2018-19. Candidate can apply online on the website of the Commissioner for Entrance Examinations during the period from 1st February 2018 to 28th February 2018.
The courses offered are:
(a) Medical Courses:
(i) M.B.B.S. (ii) B.D.S. (iii) B.H.M.S. (Homoeo) (iv) B.A.M.S. (Ayurveda) (v) B.S.M.S. (Sidha) (vi) B.U.M.S. (Unani)
(b) Allied Courses:
(i) B.Sc. (Hons.) Agriculture (ii) B.Sc. (Hons.) Forestry
(iii) Veterinary: B.V.Sc. & A.H. (iv) Fisheries: B.F.Sc.
(c) Engineering Courses:
B.Tech. [including B.Tech. (Agri. Engg.) & B.Tech. (Food Engg. & Tech.) courses under the Kerala Agricultural University, B.Tech. (Dairy Technology) & B.Tech. (Food Technology) courses under the Kerala Veterinary & Animal Sciences University], B.Tech. (Food Science & Technology) Course under Kerala University of Fisheries & Ocean Studies
(d) Architecture Course:
B.Arch. (No Entrance Examination. Admission is based on merit as assessed by equal weightage to NATA Score and marks/grades in the Qualifying Examination)
(e) Pharmacy Course: B. Pharm.

Note that candidates satisfying the eligibility conditions as laid down in the Prospectus and who seek admission to any or all of the above mentioned courses have to apply online through the website of the Commissioner for Entrance Examinations, 
www.cee.kerala.gov.in from 1st February 2018 to 28th February 2018 and should send the printout of the online submitted application along with supporting documents to the Commissioner for Entrance Examinations on or before the last date and time.
The CEE will conduct Entrance Examination for admission to Engineering Courses only.
The CEE will not conduct any Entrance Examin ation for admission to B.Arch. course and Medical & Allied courses. However, candidates seeking admission to B.Arch. course
should compulsorily appear and qualify the National Aptitude Test in Architecture (NATA) conducted by the Council of Architecture (COA) on or before 10.06.2017. Candidates seeking admission to any of the Medical & Allied courses should compulsorily appear and qualify the National Eligibility-cum-Entrance Test-Under Graduate (NEET-UG) 2018 conducted by the Central Board of Secondary Education (CBSE)

The entrance examinations for Engineering Courses except Architecture will be conducted on 23rd April 2018 from 10.00 am to 12.30 pm (Paper-I Physics & Chemistry) and on 24th April 2018 from 10 am to 12.30 pm (Paper-II Mathematics)
For details you may visit the official website of the commissioner, http://www.cee-kerala.org