In pneumatic control systems the control valve used as final control element converts
A). Pressure signal to electric signal
B). Pressure signal to position change
C). Electric signal to pressure signal
D). Position change to pressure signal
1. The 'crawling' in an induction motor is caused by
3. The open circuit voltage of a compound generator is 250 V. At full load the terminal voltage
4. In the case of an unsymmetrical alternating current the average value must always be taken over
5. In a p-channel JFET, the charge carriers are ___________
6. To limit short-circuit current in a power system are used
8. The arc voltage produced in A.C. circuit breaker is always