MCQOPTIONS
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MCQOPTIONS
This section includes 2 Mcqs, each offering curated multiple-choice questions to sharpen your Heat Transfer Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Consider two surfaces, one absolutely black and the other non-black. These surfaces are arranged parallel to each other and so close that the radiation of one falls totally on the other. Choose the correct option |
| A. | 1 denotes the radiant energy E emitted by the non-black surface impinges on the black surface |
| B. | 1 denotes the radiant energy E emitted by the black surface impinges on the non-black surface |
| C. | 2 and 3 denotes the quantity α E b |
| D. | 4 denotes the quantity (1 – α) E b |
| Answer» B. 1 denotes the radiant energy E emitted by the black surface impinges on the non-black surface | |
| 2. |
If radiant energy E B emitted by the black surface strikes the non-black surface. If non-black surface has absorptivity α, it will absorb how much radiations? |
| A. | α E B |
| B. | 2 α E B |
| C. | 3 α E B |
| D. | 4 α E B |
| Answer» B. 2 α E B | |