1. ____ factor is the ratio of total flux to the useful flux in a magnetic circuit: a) Form factor b) Leakage c) Utility d) Dispersion Ans: B Answer 2. For eliminating the effect of earth capacitance from the bridge network we use: a) Wagner’s earthing device b) High voltage at low frequency c) … Read more
1. If two meters X and Y requires 40mA and 50mA respectively, to give full scale deflection, then: a) X is more sensitive b) Y is more sensitive c) Both X and Y are equally sensitive d) It would not be possible to access the sensitivity on the basis of the given data Ans: A … Read more
We are providing following free online test,any feedback always welcome 1.TRANSMISSION AND DISTRIBUTION A.PART 1 B.PART 2 2.TRANSFORMERS A.PART 1 B.PART 2 3.MEASUREMENT AND INSTRUMENTATION A.PART 1 B.PART 2 4.SINGLE PHASE INDUCTION MOTORS A.PART 1 B.PART 2 5.CABLES A.PART 1 B.PART 2 6.SWITCHGEAR PROTECTIONS A.PART 1 B.PART 2 7.SYNCHRONOUS MOTORS A.PART 1 B.PART 2 8.POWER … Read more
1. Magnetic materials can be tested by: a) Self inductance bridge b) Cambell’s mutual inductance bridge c) AC potentiometer d) All the above Ans: D Answer 2. A PMMC instrument can be used as a fluxmeter by: a) Using low resistance shunt b) Removing the control spring c) Making the control springs of large … Read more
1. A megger indicates infinity when test terminals are open-circuited. This is because: a) No current flows through the current coil b) No current flows through the pressure coil c) No current flows through the compensating winding d) Current does not flow through current coil and pressure coil Ans: A Answer 2. Potentiometer is … Read more
1. A thermo-couple instrument can be used for the measurement of: a) Direct current only b) Alternating current only c) Both direct current and alternating current d) dc/ac voltage only Ans: C Answer 2. Electrostatic type instruments are mainly used for measurement of: a) Heavy currents b) Low currents c) Low voltages d) High … Read more
1. In a feedback amplifier, the bandwidth: a) decreases by the same amount as the gain decreases b) increases by the same amount as the gain decreases c) decreases by the same amount as the gain decreases d) remains uneffected Ans: B Answer 2. The characteristic equation of the second order of the system … Read more
1. Proportional band of a controller is defined as the range of: a) Measured variable to the set variable b) Air output as the measured variable varies from maximum to minimum c) Measured variables through which the air output varies from maximum to minimum d) None of the above Ans: C Answer 2. Proportional … Read more
1. The Transfer function of the system is used to determine: a) The output for a given input b) The type of the system c) The input for a given output d) The steady state gain Ans: A Answer 2. The transfer function of a system is defined as: a) The Laplace transform of … Read more
1. A Closed loop system is basically different from open loop control system due to: a) Feedback b) Servomechanism c) Actuating signal d) Error Signal Ans: A Answer 2. Introduction of the feedback reduces the effects of: a) Noise signal b) Disturbances c) Error signals d) Error and noise signals e) Noise signals and … Read more
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