Chapter 8 · MCQ Read Mode

Utilization of Electrical Energy

Luminous flux is measured in:

Illuminance (E), the flux received per unit area of a surface, is measured in:

Luminous efficacy of a lamp is defined as:

An incandescent lamp produces light by:

A fluorescent lamp produces visible light primarily by:

A CFL (Compact Fluorescent Lamp) differs from a standard fluorescent tube mainly in:

An LED lamp produces light through:

Compared to incandescent and fluorescent lamps, LED lamps generally offer:

Indoor lighting schemes such as direct, semi-direct, and indirect are classified primarily by:

A key design consideration for outdoor street lighting schemes is:

An electrical layout plan primarily shows:

A single-line (schematic) diagram in an electrical drawing primarily clarifies:

Estimation in an electrical project refers to:

Costing in an electrical project is derived by:

Conductor and protection sizing in an electrical estimate is primarily driven by:

The National Building Code (NBC) of Nepal primarily sets out:

National electricity standards and codes primarily establish:

A good electrical estimate/costing exercise should account for:

Estimation and costing documents primarily serve as the basis for:

National electricity standards/codes are typically referenced alongside the NBC during:

A flat rate tariff charges consumers:

A two-part tariff structure combines:

An increasing-block (slab) tariff is primarily designed to:

A Time-of-Day (ToD) tariff varies the energy charge based on:

A demand tariff primarily charges customers based on:

In Nepal, domestic electricity tariffs are commonly structured as:

Industrial and larger commercial consumers in Nepal are typically billed using:

Nepal's electricity tariff structure is generally organized by:

The Electricity Act and associated Rules/Regulations in Nepal primarily establish:

The electricity regulatory body's role in Nepal's tariff-setting process is to:

A group drive arrangement uses:

An individual drive arrangement, compared to a group drive, offers:

A multi-motor drive is characterized by:

A variable speed drive, such as one using a VFD, primarily offers:

Motor duty cycle classification (continuous, short-time, intermittent) matters for sizing because: load

The relationship between mechanical power, torque, and angular speed is given by:

When selecting a motor for a high-inertia load such as a conveyor, it is especially important to verify:

Excessive motor starting current, if not properly managed, can result in:

A safety/service factor margin is typically applied above the calculated running power requirement to:

Fans and pumps are typically classified, for motor selection purposes, as having a load characteristic of:

Resistance heating generates heat by:

Induction heating works by:

Induction heating is commonly used for:

Dielectric heating is applied to:

Arc heating, used in arc welding and electric arc furnaces, generates heat via:

Infrared heating transfers heat to the target material primarily by:

A key advantage of dielectric heating for materials like wood or food is that it:

Power factor correction contributes to electrical energy conservation mainly by:

Variable-speed drives (VSDs) contribute to energy conservation in motor-driven loads by:

Load management/scheduling as an energy conservation measure primarily involves:

A tramway is best described as:

A trolley bus differs from a tramway mainly in that it:

Why was the DC series motor traditionally favored for electric traction? demands

Modern traction systems increasingly favor three-phase induction or synchronous motors mainly because they offer:

Rheostatic (resistance) speed control of a DC traction motor works by:

Chopper control, used in modern DC traction drives, works by:

VVVF (Variable-Voltage Variable-Frequency) inverter control is primarily used for:

A key advantage of modern chopper/VVVF traction control over traditional rheostatic control is:

Modern elevators commonly use which motor/drive combination?

Regenerative braking in a modern traction drive refers to: