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Measurement and Instrumentation

Measurement and Instrumentation
A 10MHz CRO has

10MHz horizontal oscillator
10MHz vertical oscillator
10MHz supply frequency
5MHz sweep

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Measurement and Instrumentation
The full-scale deflection current of an ammeter is 1 mA and its internal resistance is 100°hm. This is to have full deflection when 100V is measured. What is the value of series resistor to be used?

99.99 ohms
100 ohms
100 K ohms
99.99 K ohms

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Measurement and Instrumentation
A spring-controlled moving iron voltmeter draws a current of 1 mA for full scale value of 100V. If it draws a current of 0.5 mA, the meter reading is

 200 V.
 25 V.
 50 V.
 100 V.

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Measurement and Instrumentation
A 50 Hz bar primary CT has a secondary with 500 turns. The secondary supplies 5 A current into a purely resistive burden of 1Ω. The magnetizing ampere-turn is 200. The phase angle between the primary and secondary current is

  4.6o.
 85.4o.
 175.4o.
 94.6o.

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Measurement and Instrumentation
Which amplifier in used in an electronic amplifier?

 Butter amplifer.
 Power amplifier.
 Wideband amplifier.
 Differential amplifier.

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Measurement and Instrumentation
For a circuit given that I = 2 ± 5 % A, R = 100 ± 0.2 % Ω the limiting error in the power dissipation I2 R in the resistor R is

 10.2%
 5.2%
 1.2%
 25.2%

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