My Report

Physics – Class 12 Mock Test 6


Correct Answer: 2 points | Wrong: -1 point
Grades: A* (100% score) | A (80%-99%) | B (60%-80%) | C (40%-60%) | D (0%-40%)
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Question 1 of 10

1. Is the ratio of frequencies of UV rays and IR rays in the glass more than, less than or equal to 1?

Question 1 of 10

Question 2 of 10

2. A transformer has an efficiency of 60% and works at 5kW. If the secondary voltage is 150 V, then what is the secondary current?

Question 2 of 10

Question 3 of 10

3. Find out the rms value of current in the circuit wherein a 35 mH inductor is connected to 200 V, 70 Hz ac supply.

Question 3 of 10

Question 4 of 10

4. Identify the type of commercial motor which works as a consequence of eddy currents.

Question 4 of 10

Question 5 of 10

5. Identify the relation between charge flow and change in magnetic flux.

Question 5 of 10

Question 6 of 10

6. What is the power factor in a pure resistive circuit?

Question 6 of 10

Question 7 of 10

7. Maxwell modified Ampere’s Circuital Law.

Question 7 of 10

Question 8 of 10

8. Pick out the correct combination for a step-up transformer.

Question 8 of 10

Question 9 of 10

9. A circular coil having an area of 3.14 × 10-2 m2 and 30 turns is rotated about its vertical diameter with an angular speed of 70 rad-1 in a uniform horizontal magnetic field of magnitude 5 × 10-2 T. If the coil forms a closed loop of resistance 15 Ω, what is the average power loss due to Joule heating?

Question 9 of 10

Question 10 of 10

10. Power factor has a unit of Watts.

Question 10 of 10


 

Manish Bhojasia - Founder & CTO at Sanfoundry
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

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