MP Board Class 12 Question Paper 2020 for Electrical Technology

E-842
.
a Roll No.

Higher Secondary Examination (Regular) - 2020

WV Ail* •
ELECTRICAL TECHNOLOGY
(Hindi & English Versions)

Total Total Printed Time : Maximum
Pages : 7+1
Questions : 20 - 3 Hours Marks : 100
Blank

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I nstruett S
(i) All questions are compulsory.
(ii) Question nos. 1 to 4 are objective type questions. Each question is allotted
5 marks.
(iii Question nos. 5 to 9 each question is allotted 3 marks. Write the answer
in about 75 words each.
Question nos. 10 to 15 each question is allotted 5 marks. Write the answer
in about 150 words each.
Question nos. 16 to 20 each question is allotted 7 marks. Write the answer
in about 200 words each.

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(a) slot. 14T wiwt (b) a9.ztl. sw 111'47

(e) trAft. comli4ws it-er (d) csv tlaa

(ii) tsicric t ar tint tar( ?TO chtir * I •

(ay 7/21 ITIN' trt

(b) 31Valta ti %Asir TIT

(c) Tgliff T4Tif *-13c tit

(d) 317327 4 traftd *at wt.

(iii) 44 3/4 uctqw 4 kV-a trgaw Awl t -

(a) um ter azt4 f*w

(b) 9aillbet Writw tra4 * fin;

(c) Trfa wwr4 * frq

(d) wit ante wir4 1.5 frOT

(iv) rth‘ art zgt as 4titff*trw TA* zw islut t ?

(v) fdMPetiktd it $ ,fi f lr isfl
, ue< tITTI wtif is ?
(a) aKiet (b) qsavti t

ic) (d)g$ vllu

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the correct 'answer :

he motor used in electric traction is —

) DC series motor (b) DC shunt motor

DC •concound motor (d) All of the above

power factor of alternator depends on
Rotation speed of rotor

Excitation of alternator

) Prime mover's input

d) Connected load at output
he purpose of regulator used in ceiling fan circuit.

a) To decrease current

To decrease applied voltage

c) To increase speed

To increase torque
'hich type of washing machine having single lob only

a) In simple type
In semi-automatic type

c) In, automatic type

d) All of the above

'Inch . of the f011Owing is not a •par of refrigerator ?
Compressor (b) Condenser

Heating coil (d) Evaporator

3. 101111111111111111111E11

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(i) fkrset tit tY lira itl.s...t 3/4 itq rb-r .s4411r 'Om t i
(ii) tar qviti( t rm. 1dnet Thi '4441'1 trdi t I
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(iii) tar gellie it wrftw t ter '9'711 ktV t I cn
(iv) to-{ ii rif* wr rbte emr, th-mz rsr wpm t I 0")

(v) twzr * rrr 3/4 wm t * wmr wrur PI
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0
Fill in the blanks :
(r) is used to control speed of electric fan.
(ii) Mainly filter is used in vacuum cleaner. (7)
(iii) By using vacuum cleaner we can save C11
(r)
(iv) Presence of current on the body of cooler is an example of (—fault.
(v) Vacuum cleaner also known as or 0
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(i) Ibrirth-W ' (a) r11143 uregEr Iforrita,o
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(II) tar9Clat (b) clIml cOt
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(iii) tir*.t. (e) P/I tert 01
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(iv) Trif VT (d) lizm zw 0
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(v) wriVrr werw (e) -htil'
Match the correct columns :
(i) Ceiling fan (a) Person protective equipment
(ii) Vacuum cleaner . (b) Vaporization
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(iii) P.P.B. (c) Brush roller (f)
(21
(iv) Room cooler (d) Spin tub 0
(v) Washing machine (e) Kenopi 0

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4 B aunt tx5=5
(i) tqW 419' ib71
‘ &Ka xst trdi t I
(ii) 441-aria4ra irstr9 ittrn eR1 t
(iii) ailWf 136.1411et
oviriiii• R-290 tsr u4&TiRt bta t
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(iv. On Art tat Mutqi wri wnit t I re)
ftgl rkz-i (mg d-gt ;to
to true or false :
Three phase supply is used in table fan.
There are two tubs in semi-automatic vittiiihing machine.
CPI
Now-a-days ammonia R-290 is not usedoili refrigerator.
.(iv) Induction motor works on DC supply.er) 0
(v) The stator of induction motor is made silicon steel.

5 tra Otitt qtrr e4aX t 3
t do you understand by electric heater ?CO .

tri
6 wa 4121 4 wict et A-1
zbT4 WCIT <Kw; 3
What is the main function of capacitor used ceiling fan ? State.

7 turil k twit i'Att/ t (ei tilq) 3
Write down the benefits of room cooler. (antt,three)

(Y)
8 ittratet iii4s-tit Tb-rri t
What is the function of condenser in refrigemor ?

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9 811
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Describe the working principle of 3 phase electric motor.

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Explain levelling and alignment in case of installation process of an electric
motor.

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Explain principle of electric room cooler.

12 Pt rt TR ifilra ft-Err* WIER I 5

Writel short note on type of mixer.

13 TM del RnvcB4 a aiilm omit t ara moat( 1:1 *1 Th`litl7

Write down the name of electrical and mechanical parts of an electric ceiling
fan and describe in brief.

14 wart 1827 avu 41 Wigaar maxnlaui Ter orAt; ?
What precautions should take while using room heater ?

15 umet;icf * mut ftrco. 12-4 tur4 Aunt al 111.197 5

Explain working. principle and working method .of alternator in brief.

16 *Fr 4 TA- or trz TrItt7r fzuroli ilarq
Write a short note on speed control of DC shunt motor.

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Des the the construction of food processor in detail.

18 eralu 4kir-i-r Ilk a* twist Rrqr aft v-a alt rfiiim(vi 'Sr Mtayz I. 7
Write down the common faults, their causes and remedies of Vacuum cleaner.

19 eidici9Ifkff Is Th-1 ti I 7
Descrihe semi-automatic washing machine.

20"Ti zfil* 71ff /Ft 76f" I 7
Dra the flowchart of "Refrigerator is not working".

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