What is the main difference between moving coil and moving iron instruments? Last Answer : M.C Instruments M.I Instruments 1. MC type instruments are more accurate. 1. MI type are less accurate than MC type. ... C measurements. 7. Can be used for A.C as well as for D.C measurements ...
Compare moving coil and moving iron instruments. Last Answer : S.No M.C Instruments M.I Instruments 1 More accurate Less ... Controlling torque is provided by spring Controlling torque is provided by gravity or spring ...
Mention the errors in moving coil instruments. Last Answer : The errors that usually occur in PMMC instruments are 1. The frictional error. 2. Temperature error. 3. The error owing weakening of permanent magnet. 4. Stray magnetic field error. 5. Thermo-electric error. 6. Observational error...
List the operating forces present in indicating instruments. Last Answer : In an indicating instrument, it is essential that the moving system is acted upon by three distinct torque (or forces) for satisfactory working. There torques are: 1. A deflecting or operating torque, Td 2. A controlling torque, Tc 3. A damping torque, Tv....
Draw and explain the working principle of attraction type, repulsion type moving iron instruments and derive its deflecting torque. Last Answer : CLASSIFICATION OF MOVING IRON INSTRUMENTS: Moving iron instruments are of two types i. Attraction type. ii. Repulsion type Attraction type: The coil is flat and has a narrow ... as introduction of a permanent magnet required for eddy current damping would destroy the operating magnetic field....
326 questions
305 answers
0 comments
110 users