MCQOPTIONS
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MCQOPTIONS
This section includes 124 Mcqs, each offering curated multiple-choice questions to sharpen your Electronics knowledge and support exam preparation. Choose a topic below to get started.
| 101. |
What procedure should be followed when troubleshooting with an ammeter or voltmeter? |
| A. | Short the leads and adjust. |
| B. | Check the meter’s external power supply. |
| C. | Start with the highest scale and adjust down to a lower scale. |
| D. | Start with the lowest scale and adjust up to a higher scale. |
| Answer» D. Start with the lowest scale and adjust up to a higher scale. | |
| 102. |
What is RT for a 12 k, a 4 k, and a 3 k resistor in parallel? |
| A. | 1.5 k |
| B. | 2 k |
| C. | 6.3 k |
| D. | 19 k |
| Answer» B. 2 k | |
| 103. |
The total current in the given circuit is ___. |
| A. | 2.5 mA |
| B. | 0.6 mA |
| C. | 1.5 mA |
| D. | 0.4 mA |
| Answer» B. 0.6 mA | |
| 104. |
If a branch opens in a parallel circuit, the total circuit resistance decreases. |
| A. | 1 |
| B. | |
| Answer» C. | |
| 105. |
Which is considered to be the common reference for a parallel circuit? |
| A. | Voltage |
| B. | Current |
| C. | Power |
| D. | Resistance |
| Answer» B. Current | |
| 106. |
What does VS equal in the given circuit? |
| A. | 0 V |
| B. | 9 V |
| C. | 27 V |
| D. | More information is needed to find VS. |
| Answer» C. 27 V | |
| 107. |
The voltage in a parallel circuit is the same across each branch of the circuit. |
| A. | 1 |
| B. | |
| C. | 1 |
| D. | |
| Answer» B. | |
| 108. |
What is the total resistance of four 1 k parallel-connected resistors? |
| A. | 200 ohms |
| B. | 250 ohms |
| C. | 400 ohms |
| D. | 4 kilohms |
| Answer» C. 400 ohms | |
| 109. |
As additional resistors are connected to a parallel circuit, the total resistance will ___. |
| A. | increase |
| B. | increase by the value of the resistor being connected |
| C. | decrease |
| D. | remain unchanged |
| Answer» D. remain unchanged | |
| 110. |
What does I3 equal in the given circuit? |
| A. | 5 mA |
| B. | 45 mA |
| C. | 50 mA |
| D. | 100 mA |
| Answer» B. 45 mA | |
| 111. |
What is the product-over-sum result of 150 and 6800? |
| A. | 150 |
| B. | 146.7 |
| C. | 0.006 |
| D. | 6800 |
| Answer» C. 0.006 | |
| 112. |
The voltage read by the voltmeter will be: |
| A. | 24 V |
| B. | 12 V |
| C. | 6 V |
| D. | 4 V |
| Answer» C. 6 V | |
| 113. |
What does R1 equal in the given circuit? |
| A. | 90 |
| B. | 180 |
| C. | 200 |
| D. | 1.8 k |
| Answer» C. 200 | |
| 114. |
The voltage across any branch of a parallel circuit: |
| A. | varies as the total current varies |
| B. | is inversely proportional to total circuit resistance |
| C. | is equally applied to all branch conductances |
| D. | is dropped in proportion to each branch resistance |
| Answer» D. is dropped in proportion to each branch resistance | |
| 115. |
What happens to total resistance in a circuit with parallel resistors if one of them opens? |
| A. | It increases. |
| B. | It halves. |
| C. | It remains the same. |
| D. | It decreases. |
| Answer» B. It halves. | |
| 116. |
What would these meter readings indicate about the circuit in the given circuit?Meter Readings: I = 7.6 mA, V = 12 V |
| A. | R1 is open. |
| B. | R2 is open. |
| C. | The fuse is open. |
| D. | The circuit is operating normally. |
| Answer» C. The fuse is open. | |
| 117. |
The total resistance in a parallel circuit is always less than the least resistor. |
| A. | 1 |
| B. | |
| C. | 1 |
| D. | |
| Answer» B. | |
| 118. |
A parallel circuit is also used as a divider for: |
| A. | conductance |
| B. | voltage |
| C. | power |
| D. | current |
| Answer» E. | |
| 119. |
What would these meter readings indicate about the circuit in the given circuit?Meter Readings: I = 0 mA, V = 0 V |
| A. | R1 is open. |
| B. | R2 is open. |
| C. | The fuse is open. |
| D. | The circuit is operating normally. |
| Answer» D. The circuit is operating normally. | |
| 120. |
Components that connect in parallel form: |
| A. | branches |
| B. | open circuits |
| C. | short circuits |
| D. | a voltage divider |
| Answer» B. open circuits | |
| 121. |
What is the total power loss if 2 k and 1 k parallel-connected resistors have an IT of 3 mA? |
| A. | 6 W |
| B. | 36 W |
| C. | 6 mW |
| D. | 36 mW |
| Answer» D. 36 mW | |
| 122. |
When a parallel 5 k resistor and a 25 k resistor have a 10 V supply, what is the total power loss? |
| A. | 2.4 mW |
| B. | 3.3 mW |
| C. | 24 mW |
| D. | 33 mW |
| Answer» D. 33 mW | |
| 123. |
The total current in the given circuit equals _____. |
| A. | 86 mA |
| B. | 170 mA |
| C. | 42 mA |
| D. | 128 mA |
| Answer» C. 42 mA | |
| 124. |
When parallel resistors are of three different values, which has the greatest power loss? |
| A. | The smallest resistance |
| B. | The largest resistance |
| C. | They have the same power loss. |
| D. | Voltage and resistance values are needed. |
| Answer» B. The largest resistance | |