Class 12 Electronics Chapter 10 Testing and Measurement in an Electrical Panel Solutions English Medium As Per AHSEC New Syllabus to each chapter is provided in the list so that you can easily browse through different chapters Class 12 Electronics Chapter 10 Testing and Measurement in an Electrical Panel Question Answer and select need one. Class 12 Electronics Chapter 10 Testing and Measurement in an Electrical Panel Notes Download PDF. AHSEC Class 12 Elective Electronics Question Answer English Medium.
Class 12 Electronics Chapter 10 Testing and Measurement in an Electrical Panel
Also, you can read the NCERT book online in these sections Solutions by Expert Teachers as per Central Board of Secondary Education (CBSE) Book guidelines. AHSEC Class 12 Elective Electronics Textual Solutions are part of All Subject Solutions. Here we have given AHSEC Class 12 Electronics Textbook Solutions English Medium for All Chapters, You can practice these here.
Testing and Measurement in an Electrical Panel
Chapter: 10
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A. Multiple choice questions:
1. The amount of electricity consumed is measured by _____________.
(a) Multimeter.
(b) Ammeter.
(c) Voltmeter.
(d) Energy meter.
Ans: (d) Energy meter.
2. The amount of current flowing in the circuit is measured by _______________.
(a) Multimeter.
(b) Ammeter.
(c) Voltmeter.
(d) Energy meter.
Ans: (b) Ammeter.
3. The amount of voltage drop across the load is measured by a _____________.
(a) Multimeter.
(b) Ammeter.
(c) Voltmeter.
(d) Energy meter.
Ans: (c) Voltmeter.
4. Which of the following is an electromagnetic coil?
(a) Contactor.
(b) Ammeter.
(c) Current transformer.
(d) Potential transformer.
Ans: (c) Current transformer.
5. In relay NO stands for _____________.
(a) Normally out.
(b) Noise out.
(c) Neutral open.
(d) Normally open.
Ans: (d) Normally open.
6. In relay NC stands for _____________.
(a) Normally close.
(b) Noise cut.
(c) Neutral close.
(d) Normally open.
Ans: (a) Normally close.
7. Which type of transformer is used in a current transformer?
(a) Step up transformer.
(b) Step Down transformer.
(c) Step up transformer or Step Down transformer.
(d) Power transformer.
Ans: (a) Step up transformer.
8. Which type of transformer is used in a potential transformer?
(a) Step up transformer.
(b) Step down transformer.
(c) Step up transformer or step down transformer.
(d) Power transformer.
Ans: (b) Step down transformer.
B. Fill in the blanks:
1. Energy meters are used to measure the ___________ energy consumed.
Ans: Electrical.
2. Current transformer (CT) acts as a ___________ transformer.
Ans: Step-up.
3. Potential transformer (PT) acts as a ___________ transformer.
Ans: Step-down.
4. In primary winding of step up transformer voltage is ___________ but current is ___________.
Ans: Less, high.
5. In secondary winding of step up transformer voltage is ___________ current is ___________.
Ans: High, less.
C. State whether the following statements are True or False:
1. Current transformer has only one winding.
Ans: True.
2. To measure high voltage, current transformer and voltage transformer are used.
Ans: False.
3. In step-up transformer primary winding has less number of turns as compared to the secondary winding.
Ans: True.
4. In step-down transformer primary winding has less number of turns as compared to the secondary winding.
Ans: False.
5. Energy meter is tested on the basis of three segments, mechanical aspects, electrical circuiting, and climatic conditions.
Ans: True.
D. Short answer questions:
1. Write down the steps to test an ammeter.
Ans: Test the ammeter:
Material required: Multimeter, test lamp.
Procedure:
(i) Take a multimeter and set it to measure voltage by rotating the knob of the multimeter.
(ii) Choose a range above the maximum expected voltage.
(iii) Break the circuit.
(iv) Connect the ammeter leads to the circuit.
(v) Restore power to the circuit and take the reading.
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