GATE EE 2021 : Electrical Measurement Revision Quiz 7 (App update required to attempt this test)

In the figure, the value of resistor R is (25 + I/2) ohms, where I is the current in amperes. The current I is _____.

A current of -10 + 6√2 sin (ωt +30°) A is passed through a center zero PMMC meter and a moving iron instrument. The respective reading (in A) is

From the two ammeters, we get I = 10A (±10%) and I2 = 8A (±5%).

If I1 = I – I2 = 2A. Estimate the relative error in the value of I1 (in % estimated

value)_____?

Two meters X and Y requires 10 mA and 15 mA respectively to give full scale deflection, then-

Which of the following errors corresponds to alternating current moving iron instruments?

The inductance of MI instrument is given by L=(0.01+K₁θ)²μH, where θ is angular deflection in radius from zero position, angular deflection in radians corresponds to current 1.5 A and 4.5 Amp are 30° and 60°. Find the value of K₁?

A test signal is applied to the CRO through the amplifier which has a gain of 100 produce a deflection height of 5 mm, the length and distance of vertical deflection plate is 3 mm and 2.5 mm. Anode potential is 2000 V and distance between centre of the Y-plate to the screen is 20 mm. Find the input voltage in V applied to amplifier?

A Digital voltmeter is accurate up to ±1% of reading plus 3 counts. When the voltmeter reads 1 V on 10 V range, the error in reading will be ____?

The total current I= I₁ + I₂ in a circuit is measured as I₁ =250±2 A where I₂ =100±1 A . Where the limits of error are given as standard deviation, find current I?

Two 100V F.S.D PMMC type dc volt meters having figure of merit of 10kΩ/V and 20kΩ/V are connected in series. The series combination can be used to measure a maximum dc voltage of ____V.

The current coil of dynamometer wattmeter is connected to V_S(t) 24 sin(314t) V in series with 6Ω resistor. The pressure coil is connected through an ideal rectifier in series with 50 Hz source of 100 V. The inductance of PC is negligible.

Compute the reading of wattmeter and average value of voltage V_D of diode:

In a moving coil instrument having a meter resistance of 40 Ω which given a full-scale deflection with a voltage of 20 mV. The range of instrument is external by using an external series resistor up to 10 V. It the temperature coefficient of copper is 0.0032 Ω /Ω°C & that of manganin is 0.0002 Ω / Ω°C. Then what would be the error cannot by 12°C rise in temperature in the reacting of voltmeter in percentage.

The CRO has a rise time 20 nsec. The rise time of a signal measured by this CRO is 25 msec. The true rise time of signals ___________nsec.