Which of the following statements is/are true?
Statement 1: Heat conductors allow heat to pass through them easily.
Statement 2: All plastics are good conductors of heat.
Only statement 1
Let's analyze each statement:
Statement 1: Heat conductors allow heat to pass through them easily.
This statement is true. Heat conductors, by definition, are materials that readily transmit thermal energy (heat). Metals are excellent examples of heat conductors. The ease with which heat passes through a material is quantified by its thermal conductivity.
Statement 2: All plastics are good conductors of heat.
This statement is false. Plastics, in general, are poor conductors of heat; they are good insulators. This property is why they are frequently used in applications where heat insulation is required, such as cookware handles or electrical insulation. While some specialized plastics might have different properties, the general statement is incorrect.
Therefore, only statement 1 is true.
According to the ISO-A size series, what is the designation of a trimmed sheet with dimensions 297 mm × 420 mm?
Which of the following noise levels is considered potentially harmful to human health if experienced over extended periods?
Which of the following statements is/are true about Functional Dimensions (F) in engineering drawing?
Statement 1: Functional Dimensions are essential to the function of the component or space.
Statement 2: Functional Dimensions are typically shown without limits.
Statement 3: Functional Dimensions are only shown for reference purposes.
A cube with a mass of 5.74 g occupies a volume of 1.2 cm³. The density (in g/cm³) expressed with the correct number of significant figures is ______.
According to BIS SP 46-2003, which of the following applications is correctly represented by a chain-thin line in engineering drawings?
Use of energy-efficient machineries in industrial settings primarily helps ______.
An ammeter has 20 divisions between 0 A and 2 A. The least count of ammeter is
Match the columns:
Engineering Applications Type of Engineering Drawings
A) Plan, front elevation of homes to be built, foundation drawings
P) Mechanical Engineering Drawings
B) Circuit diagrams and Electrical installation drawings
Q) Electronics Engineering drawings
C) PCB tracks drawings
R) Electrical Engineering drawings
D) Riveted joints and Welded joints
S) Civil Engineering drawings
Which of the following is true?
What does the symbol given below denote in a circuit diagram?

The force which makes a vehicle to stop when brake is applied is called __________.
According to the ISO-A size series, what is the designation of a trimmed sheet with dimensions 297 mm × 420 mm?
Which of the following noise levels is considered potentially harmful to human health if experienced over extended periods?
Which physicist was famous for the gold foil experiment?