ECE :: Measurements and Instrumentation
- The full-scale deflection current of an ammeter is 1 mA and its internal resistance is 100°hm. This is to have full deflection when 100V is measured. What is the value of series resistor to be used?
- A spring controlled indicating instrument has a deflection of 90deg for maximum current I. The corresponding deflection for a gravity controlled instrument is
- PMMC type instruments normally use
- Jewels are used in instruments for the purpose of
- Which instrument has identical calibration for ac as well as dc values?
- The full-scale deflection current of an ammeter is 1 mA and its internal resistance is 100°hm. If this meter is to have full deflection at 5A, what is the value of the shunt resistance to be used?
- If the instrument is to have a wide range, the instrument should have
- It can be stated that
- To measure an A. C. voltage by using an A.C. potentiometer, it is desirable that the supply for the potentiometer in taken
- With a sweep time 10ms across the screen the approx. horizontal sawtooth frequency will be
Whatsapp
Facebook
