MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
For which of the following purposes are low voltage lamps used? |
| A. | Flood lighting |
| B. | Industrial lighting |
| C. | Stadium lighting |
| D. | Automotive lighting |
| Answer» E. | |
| 2. |
A 250 V lamp has a total flux of 3000 lumens and takes a current of 0.8 ampere from 250 V mains. Its luminous efficiency is |
| A. | 12 lumens per watt |
| B. | 9.6 lumens per watt |
| C. | 15 lumens per watt |
| D. | 240 lumens per watt |
| Answer» D. 240 lumens per watt | |
| 3. |
High-pressure mercury- vapour lamp emits: |
| A. | Red colour light |
| B. | Yellow colour light |
| C. | White colour light |
| D. | Bluish White colour light |
| Answer» E. | |
| 4. |
Candela is the unit of ________. |
| A. | Luminous flux |
| B. | Luminous effect |
| C. | Luminous pressure |
| D. | Luminous intensity |
| Answer» E. | |