CBSE Class XII Electrical Technology Question Paper 2025
Organisation : Central Board of Secondary Education (CBSE)
Class Name : 12th/HSC (Class XII)
Subject : Electrical Technology
Download : 2025 Exam Question Paper
Website : https://www.cbse.gov.in/cbsenew/question-paper.html
CBSE Class XII Electrical Technology Question Paper
Central Board of Secondary Education (CBSE) Class XII Electrical Technology 2025 Exam Question Paper.
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CBSE Class XII Electrical Technology Questions
Section A : (Objective Type Questions) (30 marks)
1. Answer any 4 out of the given 6 questions on Employability Skills. 4×1=4
(i) What is an adjective ?
(ii) The type of personality disorder characterized by extreme professionalism, order and neatness is called ____________.
(iii) Ram has feelings of emptiness and abandonment. Name the type of personality disorder he has.
(iv) Write the shortcut key which is used for ‘Select all’ option.
(v) Write any two roles/functions of an entrepreneur.
(vi) Write the full form of RWHS.
2. Answer any 5 out of the given 7 questions.
(i) One BHP is equal to :
(A) 726 watts
(B) 736 watts
(C) 746 watts
(D) 756 watts
(ii) How many contactors does a star-delta motor starter require ?
(A) Two
(B) Three
(C) Four
(D) Five
(iii) The peak energy stored in an RLC circuit divided by the average energy dissipated in circuit per radian at resonance is called :
(A) Dissipation factor
(B) Power factor
(C) Q-factor
(D) Impedance factor
(iv) The shape of a rotor is :
(A) Square
(B) Cubic
(C) Rectangular
(D) Cylindrical
(v) What does Ia indicate in the voltage equation of DC motor?
V = Eb + Ia Ra
(A) Input voltage
(B) Back emf
(C) Armature current
(D) Armature resistance
(vi) Continuity of electrical circuit is checked by ____________.
(A) Ammeter
(B) Voltmeter
(C) Ohm meter
(D) Megger
(vii) Which type of motor is used in room coolers ?
(A) Universal motor
(B) Shaded pole motor
(C) Capacitor start or capacitor run motor
(D) Repulsion motor
3. Answer any 6 out of the given 7 questions:
(i) Name any two types of single phase induction motors.
(ii) What is the use of induction-type energy meters ?
(iii) Define frequency.
(iv) The upper bowl of electric mixer is made of which material ?
(v) What is the full form of ONAN ?
(vi) What do you mean by squirrel cage induction motor ?
(vii) How will you perform earth fault test ?
4. Answer any 5 out of the given 6 questions:
Write True/False :
(i) Manual handling causes over a third of all workplace injuries.
(ii) Maintenance cost of slip ring motor is less as compared to squirrel cage motor.
(iii) Always place transformer in a dry area.
(iv) The core of electromagnet is made up of soft iron or silicon steel lamination.
(v) Three-phase induction motors are used for domestic purposes.
(vi) DC series motor is used when high starting torque is required.
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