Question: The horizontal plates of a CRO are supplied with _____________ to observe the waveform of signal?

• 1. Sinusoidal wave
• 2. Cosine wave
• 3. Sawtooth wave
• 4. None of the above

Question: An ideal ammeter has ______________ resistance?

• 1. Low
• 2. Infinite
• 3. Zero
• 4. High

Question: To send 10% of the main current through a moving coil galvanometer of resistance 99 O the shunt required is______________?

• 1. 11 O
• 2. 9 O
• 3. 100 O
• 4. 9 O

Question: If the negative potential on the control grid of CRT is increased, the intensity of spot _____________?

• 1. Is increased
• 2. Is decreased
• 3. Remains the same
• 4. None of the above

Question: Two multimeters A and B have sensitivities of 10 kO/V and 30 kO/V respectively. Then ______________?

• 1. Multimeter A is more sensitive
• 2. Multimeter B is more sensitive
• 3. Both are equally sensitive
• 4. None of the above

Question: What is the total resistance of a voltmeter on the 10 V range when the meter movement is rated for 50 µA of full-scale current ?

• 1. 10 kO
• 2. 20 kO
• 3. 200 kO
• 4. None of the above

Question: A series ohmmeter circuit uses a 3 V battery and a 1 mA meter movement. What is the half-scale resistance for this movement ?

• 1. 3 kO
• 2. kO
• 3. kO
• 4. 6 kO

Question: When an ammeter is inserted in the circuit, the circuit current will _____________?

• 1. Increase
• 2. Decrease
• 3. Remain the same
• 4. None of the above

Question: A VTVM is never used to measure ______________?

• 1. Voltage
• 2. Current
• 3. Resistance
• 4. None of the above

Question: For display of signal pattern _____________voltage is applied to the horizontal plates of a CRO?

• 1. Sinusoidal
• 2. Rectangular
• 3. Sawtooth
• 4. None of the above