Measurement and Instrumentation For handling greater currents induction watt-meters are used in conjunction with Potential transformers Current transformers Either of the above Power transformers Potential transformers Current transformers Either of the above Power transformers ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The core flux in the CT of above question no.6, under the given operating conditions is 225 mWb. 450 mWb. 0. 1000 mWb. 225 mWb. 450 mWb. 0. 1000 mWb. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation For power measurement of three phase circuit by two wattmeter method, when the value of power factor is less than 0.5 lagging Both give the same readings One of the wattmeter connections will have to be reversed One of the wattmeters will read zero Pressure coil of the wattmeter will become ineffective. Both give the same readings One of the wattmeter connections will have to be reversed One of the wattmeters will read zero Pressure coil of the wattmeter will become ineffective. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The moving coil-meters, damping is provided by the aluminium frame of the coil. damping vane in the airtight chamber. the coil spring attached to the moving. eddy current disk. the aluminium frame of the coil. damping vane in the airtight chamber. the coil spring attached to the moving. eddy current disk. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The inductance of a certain moving iron ammeter is expressed as L = 2+5θ-θ2 µH. The control spring torque is 2 × 10-6 Nm/radian. Find the deflection in radians for a current of 2A. 1 4 2 5 1 4 2 5 ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation What is the expression for momentum? mass × velocity force × displacement mass × acceleration change of velocity / time mass × velocity force × displacement mass × acceleration change of velocity / time ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS