SSC JE Measurements Quiz 12

Which element in CRO is used to collect secondary emission electrons?

What is the percentage voltage error of a potential transformer with system voltage of 11,000 V and having turns ratio of 100, if the measured secondary side voltage is 105 V?

Which of the following can measure the resistance having value below 1 Ohms most precisely?

In two wattmeter method of power calculation of a 3-phase balanced star connected system, what is the power factor of the system if one of the wattmeter shows zero reading and the other shows a positive reading?

Which of the following is NOT an advantage of PMMC type instruments?

Which of the following quantities cannot be measured using a multimeter?

Power consumed by a balanced star connected 3-phase load is measured using two-wattmeter method. The phase voltage and phase current in the load is 220 V and 10 A respectively. What will be difference in reading (in W) of the two wattmeters, if the power factor of the system is 0.8 lagging?

A circuit having power factor of 0.8 consumes 40 W. What will be the value of reactive power (in VAR) of the circuit?

Which one of the following statements is NOT true about PMMC type instruments?

Which one of the following instruments can measure voltage, resistance, and current?