dhsekerala.gov.in : HSE Electronics Question Paper Higher Secondary Education Kerala
Board : Higher Secondary Education, Government Of Kerala
Exam : HSE Electronics
Document type : Question Paper
Website : dhsekerala.gov.in
Download Sample/ Model Question Papers : I : https://www.pdfquestion.in/uploads/6007-04040_1_22_qn%20paper.pdf
II : https://www.pdfquestion.in/uploads/6007-04040_2_22_ElectrII.pdf
Electronics Model Question Paper :
First year Higher Secondary Examination – 2012
Model Question Paper, Part – III Time : 2 Hrs
Max Score : 60
Cool Off Time : 15 min
1.a) List any 4 applications of electronics in industry. (2)
b) Draw the circuit symbols of 3 components ,each from active and passive devices.
Related : HSE Higher Secondary Education Kerala Home Science Question Paper : www.pdfquestion.in/6001.html
2. For a signal v=5 sin(628t+300).Find its peak value,rms value,frequency
3 .a) KVL can be used to solve complicated networks.Comment on it. (2)
b) Find the value of current,I in the circuit using KVL – (3)
4. The devices made up of n-type semiconductor are faste
5. Semiconductor in its pure form are not used for manufacturing
6.a) 5V 100O Considering the diode to be ideal,the current through 100O resistor is (1)1) 50mA 2)0 3)100mA b) Justify your answer. (2)
7. You are supplied with a Zener diode of 6.2 V .Draw its forward and reverse
8. a) A 230V, 50 Hz supply is given to a full wave bridge rectifier circuit
b) Find out (1)rms value of output voltage (2)PIV
(3) DC value of output voltage (4) maximum efficiency (4)
9. a)CE configuration is preferred in amplifiers give reasons – (1)
b) Identify the configuration with maximum input impedence- (1)
c ) For a transistor Ic =2mA, a =0.98 find the value of IB – (2)
d ) Draw the load line for this circuit and fix the operating point- (3)
10. Draw the symbol of the following components- (4)
1. N-channel FET 2. SCR 3. TRIAC 4. Photo transistor
11) Draw the frequency response curve and mark the cut off frequencies and bandwidth-
b)A phase shift oscillator uses 5pF capacitors. Find the value of R to produce
13.a) (110.101)2 = (—————-)10 (3)
b) (43.25)10 = (——————-)2
14 . a) Simplify the following logic and realize using gates (2) F=A B C+A B C+A B
b) Realize XOR gate using basic logic gates (2)
15. Explain the measurement of the following quantities using CRO (3)
a) Voltage b) Current c) Resistance
Second Year Higher Secondary Examination – 2012
Model Question Paper, Part – III Time : 2 Hrs
Max Score : 60 ELECTRONICS Cool Off Time : 15 min
1.a) The ionosphere place a major role in long distance communication.
b) Mention the signifcance of critical frequency and MUF. (2)
2.a) Calculate the length of antenna required for effective transmission
b) Modulation is an inevitable process in communication.Explain. (3)
3. A carrier signal of 10 Sin(2p x 500 x 103t) is AM modulated
4.a) Frequency range of FM is ——– and AM is ———. (1)
b)Compare AM and FM. (3) c) The value of radio IF is ———. (1)
5.a)Draw the block diagram of a monochrome TV receiver? (2)
b) The interlaced scanning is used to reduce flicker. Explain? (3)
6.a) Design and draw a yagi yuda antenna for the reception of 300 MHz signal. (4)
b) Give the values of characteristics impedances of co-axial cable and twin-
7. Give the neat block diagram and explanation of a manual telephone switching
8. In satellite communication ,2 different frequencies are used for uplink (2)
9. Give one example for each -8 bit,16 bit and 32 bit microprocessor? (3)
10. Classify the following into input,output and memory devices. (3)
11.a) Explain the merits and demerits of E-Commerce? (2)
12. Which among the following is the best quality printer?Explain its working? (4)
13.a) (110.101)2 = (—————-)10 (3)
b) (43.25)10 = (——————-)2
14 . a) Simplify the following logic and realize using gates (2)
F=A B C+A B C+A B
b) Realize XOR gate using basic logic gates (2)
15. Explain the measurement of the following quantities using CRO (3)
a) Voltage b) Current c) Resistance
Computer Science :
1. Read the questions carefully before answering them.
2. Maximum time allowed is 2 hours 15 minutes, including cool off time
3. First 15 minutes is cool off time during which you should not answer the questions.
4. Answer all questions taking the internal choices.
1. Name the device used to connect a computer to a network.
2. A C++ programmer wishes to use the identifier
3. Predict the output : int b = 2; int c = ++b + b++; cout << b << “\n” << c;
4. When a C++ program is compiled, the following errors are reported :
1) Undefined symbol cin 2) Undefined symbol cout
(a) What can be the reason for these errors- (b) How can it be solved-
5. Write any four C++ statements to add 1 to the variable x –