The pressure coil of dynamometer type wattmeter is
Answer: Option B.
A memory system has a total of 8 memory chips each with 12 address lines and 4 data lines. The total size of the memory system is:
48 k byte
Answer: Option B. Size of each memory chip = 212 = 4096 byte = 4 kbyte Size of memory system = 8 x4 = 32 kbyte
The main reason for connecting a pulse transformer at the output stage of a thyristor triggering circuit is to
Amplify the power of the triggering pulse
Provide electrical isolation
Reduce the turn on time of the thyristor
Avoid spurious triggering of the thyristor due to noise
Answer: Option B. For isolation between control and power circuits, the use of a pulse transformer is common. Normally it has two or three windings and it is small, low power and high frequency transformer and the turn ratio is normally 1:1 or 2:1. Hence, pulse transformer is used to provide electrical isolation.
Which of the following is true about the characteristics of abstract data types? i)It exports a type. ii)It exports a set of operations
Answer: Option C.
Because it contains a description of its own structure, a database is considered to be ________ .