quiz 2

An rms reading voltmeter can accurately measure voltages of

• A. Sine wave forms

• Square wave forms

• Saw tooth wave forms

• D. All of these

In electronic voltmeter, the range of input voltages can be extended by using

• A. Functional switch

• B. Input attenuator

• C. Rectifier

• D. Balanced bridge dc amplifier

In a ramp type DVM, the multivibrator determines the rate at which the

• A. Clock pulses are generated

• B. Measurement cycles are initiated

• C. It oscillates

• D. Its amplitude varies

An 8 Bit DAC has a resolution of 0.25.if the input 00101000 then what will be the output in volts.

• 5

• 10

• 15

• None of the above

Quantities are digitised using _________

• a) D/A converter

• b) oscillator

• c) amplifier

• d) A/D converter

Which ADC is fastest

• Flash type

• Ramp type

• Successive approximation type

• Dual slope ramp type

what are the different blocks of digital multimeter

• oscillator, amplifier

• diode, op amp

• A/D, attenuator, counter

• rectifier, schmitt trigger

the scale of hot wire instrument is linear.(1mark)

• A.True

• B.False

A meter having 0-1000 μA range and 1000 Ω resistance is required to be changed to 0-100 mA meter. The value of shunt resistance is about

• 1 Ω

• 10 Ω

• 99 Ω

• 100 Ω

Electrodynamometer is___________

• AC Only

• DC Only

• AC & DC only

• None of the Above