To measure 5 volts, if one selects a 0-100 volt range voltmeter which is accurate with in ± 1%, then the error in this measurement may be up to ± 20% ± 2.5% ± 1.5% ± 7.5 % TRUE ANSWER : ? YOUR ANSWER : ?
The ratio of change in output to the change in the input is called repeatability sensitivity resolution precision TRUE ANSWER : ? YOUR ANSWER : ?
In an Anderson bridge, the unknown inductance is measured in terms of Known inductance and resistance Known capacitance and resistance Known resistance Known inductance TRUE ANSWER : ? YOUR ANSWER : ?
The meter constant of an energy meter is 1500 rev/kWh, the disc makes 3000 revolution in a given time. The energy consumed is 4 kWh 3 kWh 1 kWh 2 kWh TRUE ANSWER : ? YOUR ANSWER : ?
For measurement of inductance having high value, we should use Maxwell wein bridge Any of the listed here Hay's bridge Maxwell's bridge TRUE ANSWER : ? YOUR ANSWER : ?
In which of the transformer is the secondary nearly short circuited under normal operating condition? Distribution transformer. PT. Power transformer. CT. TRUE ANSWER : ? YOUR ANSWER : ?
For measurement of mutual inductance we can use Heavyside bridge Anderson bridge Maxwell's bridge Any of the listed here TRUE ANSWER : ? YOUR ANSWER : ?
The coil of a moving iron instrument has a resistance of 500 ohm and inductance of 1 H. It reads 250 V when a 250 V DC is applied. It series resistance is 2000 ohms its reading when fed by 250 V, 50 Hz AC will be 248 V. 252 V. 260 V. 250 V. TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is a variable displacement transducer? tachometer potentiometer None of these synchros TRUE ANSWER : ? YOUR ANSWER : ?
In a single phase energy meter, braking torque is provided by Permanent magnet None of the listed here Fluid friction Air friction TRUE ANSWER : ? YOUR ANSWER : ?