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What is the density of H2SO4 in lead accumulators?
Consider the following statements about Lead 1. Lead in bone is released into blood during pregnancy and becomes a source of exposure to the developing foetus 2. Informal and substandard recycling of lead-acid batteries is one of the cause of Lead Poisoning Which of the above statements is/are correct?
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.
Two processes X and Y need to access a critical section. Consider the following synchronization construct used by both the processes Process ? /* other code for process ? */ while(true) { varP = true; while(varQ == true) { /* Critical Section */ varP = false; } } /* other code for process ?? */   Process ? /* other code for process ? */ while(true) { varQ = true; while(varP == true) { /* Critical Section */ varQ = false; } } /* other code for process ? */   Here, varP and varQ are shared variables and both are initialized to false. Which one of the following statements is true?
The first accumulators for Armstrong’s hydraulic dock machinery were ________ which is placed raised.
Accumulators should have adequate volume to store refrigerant charge at least
How many accumulators does an MC6800 have?
__________ are used along with flip-flops to build accumulators.
User level threads are threads that are visible to the programmer and are unknown to the kernel. The operating system kernel supports and manages kernel level threads. Three different types of models relate user and kernel level threads. Which of the following statements is/are true ? (a) (i) The Many - to - one model maps many user threads to one kernel thread (ii) The one - to - one model maps one user thread to one kernel thread (iii) The many - to - many model maps many user threads to smaller or equal kernel threads (b) (i) Many - to - one model maps many kernel threads to one user thread (ii) One - to - one model maps one kernel thread to one user thread (iii) Many - to- many model maps many kernel threads to smaller or equal user threads
Which of the following are the active materials of a lead-acid cell? 1) Lead Peroxide (PbO2) for positive plate 2) Sponge Lead (Pb) for negative plate 3) Concentrated Sulphuric acid (H2SO4) as electrolyte 4) Dilute Sulphuric acid (H2SO4) as electrolyte