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Consider the following statements: In case of helical gears, teeth are cut at an angle to the axis of rotation of the gears. 1) Helix angle introduces another ratio called axial contact ratio. 2) Transverse contact ratio is equal to axial contact ratio in helical gears. 3) Large transverse contact ratio does not allow multiple teeth to share the load. 4) Large axial contact ratio will cause larger axial force component Which of the above statements are correct?
Which of the following statements with respect to multiprocessor system are true? (A) Multiprocessor system is controlled by one operating system. (B) In Multiprocessor system, multiple computers are connected by the means of communication lines. (C) Multiprocessor system is classified as multiple instruction stream and multiple data stream system. Choose the correct answer from the options given below:
Pharmacists recently conducted a study with respect to the reasons their customers purchased eye drops to soothe eye dryness. Dry eyes were more frequently experienced by customers who wore contact lenses than by custorners who did not wear contact lenses. The pharmacists concluded that wearing contact lenses, by itself, can cause contact wearers to have dry eyes.
Which of the following statement(s) is/are CORRECT for antigen activated effector T cells?
P. CD4+ cells make contact with macrophages and stimulate their microbicidal activity.
Q. CD4+ cells make contact with B cells and stimulate them to differentiate into plasma cells.
R. CD8+ cells make contact with B cells and stimulate them to differentiate into plasma cells.
S. CD8+ cells make contact with virus infected cells and kill them.
A treasure chest has less than 100 gold coins. The number of coin is i) One more than a multiple of 3 ii) Two more than a multiple of 4 iii) Three more than a multiple of 5 and iv) Four more than a multiple of 6 How many coins are there in the chest?
Which one of the following is true with regard to a CPU having a single interrupt request line and single interrupt grant line? i) Neither vectored nor multiple interrupting devices is possible. ii) Vectored interrupts is not possible but multiple interrupting devices is possible. iii) Vectored interrupts is possible and multiple interrupting devices is not possible. iv) Both vectored and multiple interrupting devices are possible.
The welding process used in joining mild steel shanks to high speed drills, is
Which of the following taper is used for ‘shanks of the twist drills’?
The shanks of all the centres are machined to the Morse 0 to 3 tapers.
The shanks of all the centres are machined to the metric 2 to 4 standard taper.