Electronics and Experimental Methods [CSIR (Council of Scientific & Industrial Research) Physical Sciences]: Questions 23 - 26 of 70
Choose Programs:
📹 Video Course 2024 (400 Lectures [266 hrs : 6 mins]): Offline Support
Rs. 1640.00 -OR-
1 Month Validity (Multiple Devices)
Preview All LecturesDetails
🎓 Study Material (487 Notes): 2024-2025 Syllabus
Rs. 450.00 -OR-
3 Year Validity (Multiple Devices)
Topic-wise Notes & SampleDetails
🎯 696 MCQs (& PYQs) with Full Explanations (2024-2025 Exam)
Rs. 350.00 -OR-
3 Year Validity (Multiple Devices)
CoverageDetailsSample Explanation
Help me Choose & Register (Watch Video) Already Subscribed?
Question 23
Appeared in Year: 2014
Question MCQ▾
The power of density of sunlight incident on a solar cell is . Its short circuit current density is and the open circuit voltage is 0.7 V. If the fill factor of the solar cell decreases from 0.8 to 0.5, then the percentage efficiency will decrease from (December)
Choices
Choice (4) | Response | |
---|---|---|
a. | 16.8 to 10.5 | |
b. | 24.0 to 16.8 | |
c. | 21.0 to 10.5 | |
d. | 42.0 to 26.2 |
Question 24
Appeared in Year: 2011
Question MCQ▾
A signal of frequency 10 kHz is being digitized by converter. A possible sampling time which can be use is – (June)
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. |
Question 25
Appeared in Year: 2011
Question MCQ▾
A battery powers two circuits and as shown in the figure,
The total current drawn from the battery is estimated by measuring the currents and through the individual circuits. If and are both 200 mA and if the errors in their measurement are 3 mA and 4 mA respectively, the error in the estimate of is –
(December)
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. |
Question 26
Appeared in Year: 2011
Question MCQ▾
Consider the digital circuit shown below in which the input C is always high (1) .
A | B | Z |
0 | 0 | |
0 | 1 | |
1 | 0 | |
1 | 1 |
The entries in the Z column (vertically) are, - (June)
Choices
Choice (4) | Response | |
---|---|---|
a. | 1010 | |
b. | 1111 | |
c. | 1011 | |
d. | 0100 |