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From an alloy, two specimens are machined and tested separately under tension and compression. The engineering stress-strain curves as well as the true stress-true strain curves for tension and compression are plotted in the same diagram. Identify the correct statements:
P. The engineering stress-strain curves in tension and compression are identical.
Q. The true stress-true strain curve in compression is lower than the true stresstrue strain curve in tension due to Bauschinger effect.
R. The true stress-true strain curve in tension is above the corresponding engineering stress-strain, curve.
S. The true stress-true strain curve in tension and compression are identical.
Which of the following statements are true in the case of Pulse Code Modulation (PCM)? a) If the number of bits per sample is increased from n to n + 1; the S/Nq the ratio would be 6 dB b) The quantization noise depends on the sampling rate c) The main advantage of PCM is that it possesses better performance in the presence of noise d) If the number of quantization levels increases from 4 to 64, the bandwidth increase by a factor of 4
What is the required bandwidth of the PCM system for 256 quantization levels when 48 telephone channels, each bandlimited to 4 kHz, are to be time-division multiplexed by this PCM?
Companding is used in PCM transmitters to overcome quantizing noise in PCM.
State whether the following statement is true or false regarding PCM. “In PCM, etching depth does not depend on the time, a component is immersed in the chemical solution.”
State whether the following statement is true or false about applications of PCM. “Using PCM, very high tempered materials are machined easily.”
State whether the following statement is true or false regarding advantages of PCM. “In PCM, lead times are large, when compared to that required for hard tooling using traditional means.”
What is the meaning of the term "Humanist" used during the Renaissance in 15th century Europe? 1. It refers to the masters who taught grammar and rhetoric 2. It refers to the masters who taught poetry, history and moral philosophy  3. It refers to the masters who taught subjects that were connected with religion 4. It refers to masters who emphasized skills that were developed through discussion and debate. Select the correct answer using the code give below:
Consider the following statements in respect of effect of air pollutants on vegetation: 1. Necrosis refers to killing of tissue 2. Chlorosis refers to loss or reduction of green plant pigment 3. Leaf abscission refers to the dropping of leaves 4. Leaf epinasty refers to a downward curvature of a leaf due to a higher rate of growth on the upper surface Which of the above statements are correct?
Consider the following statements: 1. IS 3583 refers to Burnt Clay Paving Bricks. 2. IS 5779 refers to Burnt Clay Soling Bricks. 3. IS 3952 refers to Burnt Clay Hollow Bricks. 4. IS 2222 refers to Burnt Clay Lay Bricks. Which of the above statements are correct?