Questions

synchronous motor can operate at lag lead and unity power factor also why because it is mainly depends on excitation

A computer software are of two types. They are :

1. System software

2. Application software

Systems software includes the operating system and all the utilities that enable the computer to function. 

Application software includes programs that do real work for users.

Hence, Operating system is an example of system software.

Pressure = (Net Force) / (Applied area) = Newton / square meters

Measuring units of pressure are:

. Pascal
. Bar
. Torr
. Pounds per square inch (psi)
. Standard atmosphere (atm).

Sound intensity or level is measured by a unit called a decibel. An 85 decibel noise level is not a safe standard for the public.

Hence, Acceptable noise level for human ear is less than 85 db.

We can never eat lunch and dinner for our breakfast.

Plants developing in dry conditions are called as xerophytes.

Ominous is the correctly spelt word in the given options. It means that giving the worrying impression that something bad is going to happen.

Distributed systems work in a network. They can share the network resources,communicate with each other.