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Multiple Choice Questions

Q:

For a transformer with primary turns 400, secondary turns 100, if 20A current is flowing through primary, we will get ___________

A) 80A at secondary B) 5A at secondary
C) 800A at secondary D) 40A at secondary
 
Answer & Explanation Answer: A) 80A at secondary

Explanation: Current in the primary of the transformer will get modified in the transformer secondary, according to the number of turns, in inverse proportion. Thus, turns are modified with 1/4 times the primary, we’ll get 4 times higher current at secondary.

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10298
Q:

What is the last step in chain surveying?

A) Reconnaissance B) Marking
C) Fixing D) Running survey lines
 
Answer & Explanation Answer: D) Running survey lines

Explanation: After having completed the preliminary work, the chaining may be started from the base line. The work in running a survey line is twofold, to chain the line and to locate the adjacent details.

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Category: Civil Engineering MCQs
Sub Category: Surveying Mcqs

7248
Q:

_________ can be used as a single phase static ac switch.

A) Diode B) SCR
C) DIAC D) TRAIC
 
Answer & Explanation Answer: D) TRAIC

Explanation: SCR cannot be used, as it is unidirectional. Diode isn’t a switch nor is the DIAC.

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6999
Q:

For a transformer with primary turns 100, secondary turns 400, if 200 V is applied at primary we will get ___________

A) 80 V at secondary B) 800 V at secondary
C) 1600 V at secondary D) 3200 V at secondary
 
Answer & Explanation Answer: B) 800 V at secondary

Explanation: Voltage in the primary of the transformer will get modified in the transformer secondary, according to the number of turns. Thus, turns are modified with 4 times the primary, we’ll get 4 times higher voltage at secondary.

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6435
Q:

Which of the following is the correct sequence of operations in a microprocessor?

A) Opcode fetch, memory read, memory write, I/O read, I/O write B) Opcode fetch, memory write, memory read, I/O read, I/O write
C) I/O read, opcode fetch, memory read, memory write, I/O write D) I/O read, opcode fetch, memory write, memory read, I/O write
 
Answer & Explanation Answer: A) Opcode fetch, memory read, memory write, I/O read, I/O write

Explanation: Initially, the opcode is fetched from memory, then memory read and write operations are performed followed by I/O read and I/O write operations.

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5988
Q:

The conduction loss versus device current characteristic of a power MOSFET is best approximated by a ________

A) Straight line B) Rectangular hyperbola
C) Parabola D) Exponential decaying functions
 
Answer & Explanation Answer: C) Parabola

Explanation: A MOSFET in ON state behaves as resistance so the conduction power loss is given by, P=I2R. Hence, the power vs current curve will be a parabola.

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5564
Q:

The cost price of house is Rs. 2500000. The house repair costed Raj Rs. 150000. The house was sole for 20% profit. What is the selling price of house?

A) Rs.318000 B) Rs.2580000
C) Rs.2500000 D) Rs.3180000
 
Answer & Explanation Answer: D) Rs.3180000

Explanation: Not available for this question

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Category: School MCQs
Sub Category: Class 8 Maths Mcqs

5466
Q:

How to overcome mistriggering on the positive pulse edges in the monostable circuit?

A) Connect a RC network at the input B) Connect an integrator at the input
C) Connect a differentiator at the input D) Connect a diode at the input
 
Answer & Explanation Answer: C) Connect a differentiator at the input

Explanation: To prevent the mistrigger on positive pulse edges, a resister & capacitor combined of 10k? and 0.001µF at the input to form a differentiator

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