Category: Electrical Measurements

This set of Electrical Measurements Multiple Choice Questions & Answers (MCQs) focuses on “Advanced Miscellaneous Problems on Measurement of Power”. 1. Two watt-meters, which are connected to measure the total power on a three-phase system supplying a balanced load, read 20.5 kW and -3.5 kW respectively. The total power is?a) 13.0 kWb) 17 kWc) 15 […]

This set of Electrical Measurements Multiple Choice Questions & Answers (MCQs) focuses on “Advanced Problems on Measurement of Power in Polyphase Circuit”. 1. Two watt meters, which are connected to measure the total power on a three-phase system supplying a balanced load, read 10.5 kW and – 2.5 kW respectively. What is the total power?a) […]

This set of Electrical Measurements Multiple Choice Questions & Answers (MCQs) focuses on “Phase Sequence Indicator”. 1. Synchronization of A.C. supply means __________a) different phase sequenceb) same phase sequencec) zero phased) using a transformer 2. Disc rotation is determined by ________a) the supply voltageb) an arrowc) the turns ratiod) the load current 3. How many […]

This set of Electrical Measurements Multiple Choice Questions & Answers (MCQs) focuses on “Electronic Energy Meter, Adjustments in Single Phase Energy meters”. 1. Measurement of energy involves _________a) inductance and capacitance measurementb) power consumption and time durationc) resistance measurement and voltage dropd) current consumption and voltage drop 2. Average power is _________a) product of voltage […]

This set of Electrical Measurements Multiple Choice Questions & Answers (MCQs) focuses on “Errors in Single Phase Energy Meters”. 1. Phase angles in an energy meter cannot be incorrect.a) Trueb) False 2. Energy meter creeps __________a) due to change in supplyb) due to reversal in polarity of voltagec) due to asymmetry in magnetic circuitd) due […]

This set of Electrical Measurements Multiple Choice Questions & Answers (MCQs) focuses on “Friction and Overload Compensation”. 1. Small torque for energy meter is provided __________a) by a supplyb) by a shading loopc) by unshaded loopd) by a transformer 2. Driving torque is small and is adjustable.a) Trueb) False 3. Energy meter reads correctly when […]

This set of Electrical Measurements Multiple Choice Questions & Answers (MCQs) focuses on “Lag Adjustment Devices”. 1. Obtaining correct reading from the energy meter requires ______________a) low resistance and iron lossesb) high resistance and iron lossesc) high resistance and low iron lossesd) low resistance and high iron losses 2. Phase angle can be made 90 […]

This set of Electrical Measurements Multiple Choice Questions & Answers (MCQs) focuses on “Induction Type Single Phase Energy Meter”. 1. Driving system in an induction type single phase energy meter consists of _________a) one magnetb) two electromagnetsc) five electromagnetsd) ten magnets 2. Series electromagnet consists of _________a) L shaped laminationsb) T shaped laminationsc) U shaped […]

This set of Electrical Measurements Multiple Choice Questions & Answers (MCQs) focuses on “Low Power Factor Wattmeter”. 1. Errors are introduced by ________a) capacitanceb) inductancec) resistanced) impedance 2. Power coil has a low value of ________a) inductanceb) capacitancec) resistanced) impedance 3. In an ordinary dynamometer, the deflecting torque is _________a) smallb) mediumc) larged) very large […]

This set of Electrical Measurements Multiple Choice Questions & Answers (MCQs) focuses on “Errors in Dynamometer Wattmeter”. 1. What is the effect of capacitance on wattmeter reading?a) aiding the inductanceb) opposite to that of inductancec) aiding the capacitanced) opposite to that of resistance 2. Wattmeter reading is not affected by temperature.a) Trueb) False 3. Pressure […]